Boeing YAL-1A, 00-0001, Airborne Laser Test Aircraft, departing Edwards AFB, 14 February 2012. (U.S. Air Force)Terrier Black Brant IX two-stage sounding rocket. (NASA)
14 February 2012: Boeing YAL-1A Airborne Laser Test Bed, serial number 00-0001, departed Edwards AFB for the last time as it headed for The Boneyard at Davis-Monthan Air Force Base, Tucson, Arizona.
The Boeing YAL-1A was built from a 747-4G4F, a converted 747-400F freighter, serial number 30201, formerly operated by Japan Air Lines and registered JA402J. It carried two solid state lasers and a megawatt-class oxygen iodine directed energy weapon system (COIL).
On 3 February 2010, it destroyed a Terrier Black Brant two-stage sounding rocket in the boost phase as it was launched from San Nicolas Island, off the coast of Southern California.
Boeing YAL-1A Airborne Laser Test Aircraft, 00-0001, in flight. The laser aiming turret is directed toward the photo aircraft. (U.S. Air Force)
The 747-400 was a major development of the 747 series. It had many structural and electronics improvements over the earlier models, which had debuted 18 years earlier. New systems, such as a “glass cockpit”, flight management computers, and new engines allowed it to be flown with a crew of just two pilots, and the position of Flight Engineer became unnecessary.
The most visible features of the –400 are its longer upper deck and the six-foot tall “winglets” at the end of each wing, which improve aerodynamic efficiency be limiting the formation of wing-tip vortices.
Japan Air Lines’ Boeing 747-400F, JA402J. (Konstantin von Wedelstaedt/Wikimedia)
The Boeing 747-400F is the freighter version of the 747-400 airliner. It has a shorter upper deck, no passenger windows and the nose can swing upward to allow cargo pallets or containers to be loaded. It is 231 feet, 10 inches (70.663 meters) long with a wingspan of 211 feet, 5 inches (64.440 meters) and overall height of 63 feet, 8 inches (19.406 meters). Empty weight is 394,100 pounds (178,761 kilograms). Maximum takeoff weight (MTOW) is 875,000 pounds (396,893 kilograms).
Boeing YAL-1A Airborne Laser Test Aircraft, 00-0001. (U.S. Missile Defense Agency)
The YAL-1A was powered by four General Electric CF6-80C2B5F turbofan engines, producing 62,100 pounds of thrust (276.235 kilonewtons), each. The CF6-80C2B5F is a two-spool, high-bypass-ratio turbofan engine. It has a single-stage fan section, 18-stage compressor (4 low- and 14 high-pressure stages) and 7-stage turbine section (2 high- and 5 low-pressure stages). The fan diameter is 7 feet, 9.0 inches (2.362 meters). The engine is 13 feet, 4.9 inches (4.087 meters) long with a maximum diameter of 8 feet, 10.0 inches (2.692 meters). It weighs 9,760 pounds (4,427 kilograms).
It had a cruise speed of 0.84 Mach (555 miles per hour, 893 kilometers per hour) at 35,000 feet (10,668 meters) and maximum speed of 0.92 Mach (608 miles per hour, 978 kilometers hour). Maximum range at maximum payload weight is 7,260 nautical miles (13,446 kilometers).
Boeing YAL-1A in storage at Davis-Monthan Air Force Base, 27 August 2014. The airframe was disassembled and finally broken up 25 September 2014. (Soracat)
NASA 911, a modified Boeing 747-146 transport, FAA registration N911NA, one of two NASA Space Shuttle Carrier Aircraft, makes its final landing at Air Force Plant 42, Palmdale, California, 8 February 2012. (NASA)
8 February 2012: End of an era. NASA 911, the Boeing 747-146 that has been used as a space shuttle carrier, made its last flight on Wednesday, 8 February 2012, a 20-minute hop from Edwards Air Force Base to Palmdale Plant 42. In 38 years, this airplane accumulated 33,004.1 flight hours, which is relatively low time for an airliner. It will be cannibalized for parts to keep another NASA 747 flying.
NASA 911 (Boeing serial number 20781) made its first flight 31 August 1973, registered as JA8817, and flew in commercial service with Japan Air Lines for fifteen years. It was obtained by NASA in 1989 and turned over to Boeing for modification as the second Space Shuttle Carrier Aircraft.
Japan Air Lines’ Boeing 747-146 JA8112, sister ship of NASA 911. (Michael Gilliland/Wikimedia)
The 747-146 SR is a short-range, high-capacity airliner variant produced by Boeing for Japan Air Lines. It was strengthened to handle the additional takeoffs and landings of short-duration flights. Additional structural support was built into the fuselage, wings and landing gear, while the fuel capacity was reduced 20% from that of the standard 747-100. Seven were built between 1973 and 1975.
It is 231 feet, 10.2 inches (70.668 meters) long with a wingspan of 195 feet, 8 inches (59.639 meters) and overall height of 63 feet, 5 inches (19.329 meters). Its empty weight is 323,034 pounds (146,526 kilograms) and maximum takeoff weight 710,000 pounds (322,050 kilograms).
NASA’s fleet of Space Shuttle Carrier Aircraft, NASA 905 (foreground) and NASA 911. (NASA)
NASA 911 was equipped with more powerful JT9D-7J engines in place of the standard airplane’s JT9D-7A engines. This increased thrust from 46,950 pounds to 50,000 pounds (222.41 kilonewtons) each. The JT9D-7J is a two-spool, axial-flow turbofan engine with a single stage fan section, 14-stage compressor section and 4-stage turbine. This engine has a maximum diameter of 7 feet, 11.6 inches (2.428 meters), is 12 feet, 10.2 inches (3.917 meters) long and weighs 8,850 pounds (4,014 kilograms).
While carrying a space shuttle, the SCA maximum speed is 0.6 Mach (432 miles per hour, or 695 kilometers per hour). The service ceiling is 15,000 feet (4,572 meters) and its range is 1,150 miles (1,850.75 kilometers).
A NASA Space Shuttle Carrier Aircraft takes off from Edwards Air Force Base, California with the Space Shuttle Orbiter Endeavour. (NASA)
NASA 911 is on display at the Joe Davies Heritage Airpark, Palmdale, California.
Space Shuttle Discovery (STS-63) lifts off from Launch Complex 39B, Kennedy Space Center, 05:22:04 UTC, 3 February 1995. (NASA)
3 February 1995: At 12:22:03.994 a.m., Eastern Standard Time, Space Shuttle Discovery (OV-103) lifted off from Launch Complex 39B at the Kennedy Space Center, Cape Canaveral, Florida. The mission, STS-63, was a rendezvous with the Russian space station, Mir.
Commander James Donald Wetherbee, United States Navy, on his second space flight, was the mission commander. Lieutenant Colonel Eileen Marie Collins, United States Air Force, on her first space flight, was Discovery’s pilot. This was the first time in the NASA Space Shuttle Program that a woman had been assigned as pilot of a space shuttle.
Also on board were Mission Specialists Bernard Anthony Harris, Jr., M.D.; Colin Michael Foale, Ph.D.; Janice Elaine Voss, Sc.D.; and Colonel Vladimir Georgiyevich Titov, Russian Air Force, of the Roscosmos State Corporation for Space Activities.
Flight crew of Space Shuttle Discovery, Mission STS-63. Seated, left to right: Janice Elaine Voss, Sc.D., Mission Specialist; Lieutenant Colonel Eileen Marie Collins, U.S. Air Force, Pilot; Commander James Donald Weatherbee, U.S. Navy, Mission Commander; Colonel Vladimir Georgiyevich Titov, Russian Air Force, Cosmonaut. Standing, Dr. Bernard Anthony Harris, Jr., M.D., Mission Spcialist; C. Michael Foale, Mission Spcialist. (NASA MSFC-9414225)
The primary purpose of the mission was to conduct a close approach and fly-around of Mir to demonstrate techniques prior to an actual docking, scheduled for a later flight. A number of scientific experiments and a space walk were carried out by the crew.
Space Station Mir imaged from Space Shuttle Discovery during Mission STS-63. Souz TM-20 is docked with the space station. (NASA)
Discovery landed at the Kennedy Space Shuttle Landing Facility at 11:50:19 UTC, 11 February, after completing 129 orbits. The total mission duration was 8 days, 6 hours, 28 minutes, 15 seconds.
Eileen Collins was born at Elmira, New York, 19 November 1956, a daughter of Irish immigrants to the United States of America. She graduated from high school in 1974 then attended Corning Community College, Corning, New York, where she earned an associate’s degree in Mathematics and Science, 1976. She went on to Syracuse University at Syracuse, New York, graduating in 1978 with a Bachelor of Arts (B.A.) degree in math and exonomics. In 1986 Collins earned a master of science degree in Operations Research from Stanford University, and three years later, received a second master’s degree in Space Systems Management from Webster University.
2nd Lieutenant Eileen M. Collins, USAF, with a Northrop T-38A Talon trainer at Vance AFB, September 1979. (U.S. Air Force)
Eileen Collins had expressed an interest in aviation and space flight from an early age. After graduating from Syracuse University, she was one of four women selected to attend U.S. Air Force pilot training at Vance Air Force Base, Oklahoma. She graduated in 1979, earning her pilot’s wings and was commissioned as a second lieutenant. She remained at Vance AFB as a pilot instructor, flying the Northrop T-38A Talon supersonic trainer.
Collins was next sent for pilot transition training in the Lockheed C-141 Starlifter, a four-engine transport. She served as a pilot at Travis Air Force Base, California.
From 1986–1989, Captain Collins was assigned as Assistant Professor in Mathematics at the U.S. Air Force Academy, Colorado Springs, Colorado. Next, she became only the second woman to attend the Air Force Test Pilot School at Edwards Air Force Base, graduating with Class 89B.
Major Eileen M. Collins, U.S. Air Force, with McDonnell F-4E-31-MC Phantom II 66-0289, at Edwards AFB, 1990. (U.S. Air Force)Eileen Collins (Irish America Magazine)
In 1990, Major Collins was accepted for the NASA astronaut program, and was selected as an astronaut in 1992.
Eileen Marie Collins was awarded the Harmon Trophy for her flight aboard Discovery (STS-63). In 1997, she flew as pilot for Atlantis (STS-84). She commanded Columbia (STS-93) in 1999, and Discovery (STS-114) in 2005.
Colonel Collins retired from the Air Force in January 2005, and from NASA in May 2006. With a remarkable record of four shuttle flights, she has logged 38 days, 8 hours, 10 minutes of space flight. During her career, she flew more than 30 aircraft types, and logged a total of 6,751 hours.
Colonel Eileen M. Collins, U.S. Air Force, NASA Astronaut. (Annie Liebovitz)
General Dynamics YF-16 Fighting Falcon 72-1567, 2 February 1974. (U.S. Air Force 071202-F-9999J-029)
2 February 1974: Test pilot Philip Francis Oestricher made the first test flight of the General Dynamics YF-16 Light Weight Fighter prototype, 72-1567, at Edwards Air Force Base, California. During the 90-minute flight the airplane reached 400 knots (740.8 kilometers per hour) and 30,000 feet (9,144 meters).
A prototype General Dynamics YF-16 nears completion, 1973. (General Dynamics)
Built at Fort Worth, Texas, the prototype rolled out 13 December 1973. It was loaded aboard a Lockheed C-5A Galaxy heavy-lift transport and was flown to Edwards. During high-speed taxi tests on 20 January 1974 the YF-16 began to oscillate in the roll axis, threatening to touch the wingtips to the ground.
Philip Francis Oestricher, General Dynamics test pilot. (Photograph courtesy of Neil Corbett, Test and Research Pilots, Flight Test Engineers)
To prevent damage, Phil Oestricher lifted off to regain control and after six minutes, touched down again.
The airplane had sustained damage to the right horizontal stabilizer. Engineers determined that the airplane’s roll control was too sensitive, and that the exhaust nozzle was improperly wired, resulting in too much thrust at low throttle settings. The YF-16 was repaired and was ready for its first test flight on 2 February.
The first prototype YF-16, 72-1567, during a test flight, March 1974. Edwards Air Force Base is visible under the airplane’s left wing. (Lockheed Martin)
The two YF-16 prototypes competed against the Northrop YF-17 for the role of the Air Force and NATO light weight fighter program. The YF-16 was selected and single-seat F-16A and two-seat F-16B fighters were ordered. The YF-17 was developed into the U.S. Navy’s F/A-18 Hornet.
General DynamicsYF-16 72-1567 and Northrop YF-17 72-1569 prototypes. (U.S. Air Force)Phil Oestricher in the cockpit of the first General Dynamics YF-16 Light Weight Fighter prototype at Carswell Air Force Base, Texas, December 1973. (Lockheed Martin)
The F-16 was designed to be a highly-maneuverable, light weight air superiority day fighter, but it has evolved into a multi-role fighter/fighter bomber with all weather attack capability.
The F-16 (now, a Lockheed Martin product) remains in production, with more than 4,600 having been built in the United States and under license in Europe. The United States Air Force had 1,017 F-16s in service as of 2021,
A U.S. Air Force F-16C Block 50D Fighting Falcon, serial number 91-0405, of the 52nd Fighter Wing, Spangdahlem Air Base, Germany. This F-16 is armed with four AIM-120 air-to-air missiles and two air-to-ground AGM-88 High-speed Anti-Radiation Missiles (HARM). It carries external fuel tanks and an electronics countermeasures unit. (U.S. Air Force)
The F-16C is a single-seat, single-engine Mach 2+ fighter. It is 49.3 feet (15.03 meters) long with a wingspan of 32.8 feet (10.0 meters) and overall height of 16.7 feet (5.09 meters). It has an empty weight of 20,300 pounds (9,207.9 kilograms) and maximum takeoff weight of 48,000 pounds (21,772 kilograms).
The fighter is powered by one Pratt & Whitney F100-PW-229 or General Electric F110-GE-129 afterburning turbofan engine which produces 17,800 pounds of thrust (79.178 kilonewtons) each, or 29,100 pounds (129.443 kilonewtons) with afterburner) (F100), or 29,500 pounds (131.223 kilonewtons) (F110).
Lockheed Martin F-16C Block 30H Fighting Falcon 87-0292, 121st Fighter Squadron, 113th Operations Group, District of Columbia Air National Guard (Lockheed Martin)
The Fighting Falcon has a maximum speed of Mach 1.2 (913 miles per hour, or 1,470 kilometers per hour) at Sea Level, and Mach 2+ at altitude. The fighter’s service ceiling is higher than 50,000 feet (15,240 meters). Maximum range is 2,002 miles (3,222 kilometers).
The F-16C is armed with one General Electric M61A1 Vulcan 20 mm 6-barreled Gatling gun with 511 rounds of ammunition, and can carry a wide range of air-to-air and air-to-ground missiles and bombs.
The first production F-16A made its first flight December 1976. The U.S. Air Force inventory 1,017 C/D (2021) More than 4,600 have been built, serving with 25 air forces world wide.
The F-16 Block 70 remains in production at Greenville, South Carolina . Lockheed Martin has a backlog of 117 Block 72 aircraft as of 31 January 2025.
Lockheed Martin F-16 under construction at Greenville, South Carolina. (Lockheed Martin)
The first prototype YF-16, 72-1567, is now on display at the Virginia Air and Space Center, Hampton, Virginia.
The first of the two General Dynamics prototype YF-16 Fighting Falcon lightweight fighters, 72-1567, on display at the Virginia Air and Space Center, Hampton, Virginia. (Rtphokie via Wikipedia)Philip Oestricher, 1948
Philip Francis Oestricher was born at Orlando, Florida, 26 September 1931. He was the first of four children of Albert Raymond Oestricher, a chiropractor, and Henriette Hyacinthe Dodane Oestricher.
He attended Orlando High School, where he was a classmate of his future wife, Patricia Ratti. Both graduated in 1949.
Oestricher then attended the University of Florida at Gainesville, Florida, where he majored in engineering. While there, he was associate editor of Florida Engineer, and a member of the Institute of Aeronautical Sciences, Automotive Engineering Society, Sigma Tau (ΣΤ), an engineering honor society, and Phi Kappa Phi (ΦΚΦ), also an honor society. He graduated with a Bachelor of Science degree in aeronautical engineering, 8 June 1952. Oestricher continued post-graduate studies and earned a masters degree in engineering in 1953.
Miss Patricia Ratti
Philip Francis Oestricher married Miss Patricia Maria Ratti, then a senior at the University of Florida, at 10:00 a.m., 27 December 1952, in a ceremony held at the St. James Roman Catholic Church at the corner of Orange Avenue and Robinson Street, in downtown Orlando, Florida. They would eventually have four children.
Oestricher worked for the Convair Division of General Dynamics Corporation at Fort Worth, Texas, in 1953–1954.
Convair Division of General Dynamics Corporation at Fort Worth, Texas, circa 1954.
Having enlisted in the United States Marine Corps, Private First Class Oestricher entered the USMC Officer Candidate Course at Quantico, Virginia, 12 April 1954. He graduated as a Naval Aviator and was commissioned a second lieutenant in July 1954. He attended flight training at NAS Pensacola, Florida, in 1955. He continued with advanced flight training at NAS Corpus Christi, Texas, and was promoted to the rank of first lieutenant, 2 January 1956. On 27 January 1956, 1st Lieutenant Oestricher was cited as the outstanding fighter syllabus graduate from the Naval Air Advanced Training Command.
A flight of four Grumman F9F-8 Cougars of VMF(AW)-114, circa 1957. (USMC A135160)
Lieutenant Ostricher was assigned to Marine All-Weather Fighter Squadron 114 (VMF(AW)-114, “Death Dealers”) flying the Grumman F9F-8 Cougar and Douglas F4D-1 Skyray. The squadron deployed aboard the Midway-class large aircraft carrier USS Franklin D. Roosevelt (CVA-42). The carrier had just completed the SCB-110 refit and emerged with a new angled flight deck deck.
Three Douglas F4D-1 Skyrays of VMF(AW)-114, prepare to launch from USS Franklin D. Roosevelt, CVA-42. (Sgt. Harold (“Woody”) Woodrom, USMC)
Following this tour at sea, Lieutenant Oestricher left active duty, but remained in the U.S. Marine Corps Reserve, eventually rising to the rank of lieutenant colonel.
Phil Oestricher returned to Convair as an aeronautical engineer. He was assigned work on the B-58A Hustler, a Mach 2 strategic bomber; the Model 54, the U.S. Air Force NX-2 CAMAL ¹ nuclear-powered bomber prototype; and the RB-57F, a specialized strategic reconnaissance aircraft.
Artists rendering of the Convair Model 54, a proposal for the U.S. Air Force NX-2 nuclear-powered bomber. (Convair)General Dynamics RB-57F Canberra 63-13291. (U.S. Air Force 061031-F-1234P-021)
Phil Oestricher attended the U.S. Navy Test Pilot School (Class 44) at NAS Patuxent River, Maryland, in 1966. The course included 420 classroom hours, and about 150 flight hours. Oestricher flew 15 different aircraft types. He graduated as his class’s outstanding student.
“He stood out as an exceptionally capable test pilot in all respects. We are proud to list him as a graduate of our school,” said D. Z. Skalla, acting director of USNTPS.²
“TEST PILOTS—Graduates of Class No. 44, U.S. Naval Test Pilot School, inspect F-111A close up during a recent tour of Fort Worth division. Some will be flight-testing F-111Bs in the days ahead.” Phil Oestricher is sixth from right. (General Dynamics News)
Lieutenant Colonel Oestricher commanded VMF(AW)-112, the Marine Corps’ largest reserve squadron. At the time, the squadron was flying the Chance Vought F8U Crusader. Colonel Oestricher retired from the Marine Corps in 1973.
Phil Oestricher was a design safety engineer on the General Dynamics F-111 program. As a test pilot, he flew all models of that aircraft.
He made the first flight of the F-16B 8 August 1977.
In 1979, Oestricher was awarded the Iven C. Kincheloe Award of the Society of Experimental Test Pilots for “outstanding professional accomplishment in flight testing.”
Phil Oestricher worked for General Dynamics as an engineer and test pilot for 33 years. He was the Director of Flight Test for 11 years. He retired in July 1992.
General Dynamics YF-16 LWF prototype 72-1568 with pilot, Phil Oestricher, May 1974. (Code One Magazine)
Lieutenant Colonel Philip Francis Oestricher, United States Marine Corps (Retired), died at Benbrook, Texas, 18 December 2015. He was 84 years old. His remains were interred at Woodlawn Memorial Park, Gotha, Florida.
¹ Continuous Airborne Alert, Missile Launching and Low-Level Penetration
² GENERAL DYNAMICS NEWS, Wednesday, 30 November 1966, Page 6, Column 2
Convair B-58A-10-CF Hustler 59-2441, Thompson Trophy winner. (U.S. Air Force)
14 January 1961: Lt. Col. Harold E. Confer, Lt. Col. Richard Weir and Major Howard Bialas, flying Convair B-58A-10-CF Hustler 59-2441, Roadrunner, obliterated the FAI closed-course speed records established only two days earlier by another B-58 crew flying 59-2442. They averaged 2,067.58 kilometers per hour (1,284.73 miles per hour) over a 1,000 kilometer closed circuit, more than 200 miles per hour faster, and set three Fédération Aéronautique Internationale records. They were awarded the Thompson Trophy.
59-2441 was sent to The Boneyard in 1970, and along with its sister, 59-2442, scrapped in 1977.
Colonel Harold E. Confer, U.S. Air Force
FAI Record File Num #4565 [Direct Link]
Status: ratified – retired by changes of the sporting code
Region: World
Class: C (Powered Aeroplanes)
Sub-Class: C-1 (Landplanes)
Category: Not applicable
Group: 3 : turbo-jet
Type of record: Speed over a closed circuit of 1 000 km without payload
Performance: 2 067.58 km/h
Date: 1961-01-14
Course/Location: Edwards AFB, CA (USA)
Claimant Harold E. Confer (USA)
Aeroplane: Convair B-58A Hustler (USAF 92-441)
Engines: 4 G E J79
FAI Record File Num #4566 [Direct Link]
Status: ratified – retired by changes of the sporting code
Region: World
Class: C (Powered Aeroplanes)
Sub-Class: C-1 (Landplanes)
Category: Not applicable
Group: 3 : turbo-jet
Type of record: Speed over a closed circuit of 1 000 km with 1 000 kg payload
Performance: 2 067.58 km/h
Date: 1961-01-14
Course/Location: Edwards AFB, CA (USA)
Claimant Harold E. Confer (USA)
Aeroplane: Convair B-58A Hustler (USAF 92-441)
Engines: 4 G E J79
FAI Record File Num #4567 [Direct Link]
Status: ratified – retired by changes of the sporting code
Region: World
Class: C (Powered Aeroplanes)
Sub-Class: C-1 (Landplanes)
Category: Not applicable
Group: 3 : turbo-jet
Type of record: Speed over a closed circuit of 1 000 km with 2 000 kg payload
Performance: 2 067.58 km/h
Date: 1961-01-14
Course/Location: Edwards AFB, CA (USA)
Claimant Harold E. Confer (USA)
Aeroplane: Convair B-58A Hustler (USAF 92-441)
Engines: 4 G E J79
Thompson Trophy at the Smithsonian Institution National Air and Space Museum. (NASM)
The B-58 Hustler was a high-altitude Mach 2 strategic bomber which served with the United States Air Force from 1960 to 1970. It was crewed by a pilot, navigator/bombardier and a defensive systems operator located in individual cockpits. The aircraft is a delta-winged configuration similar to the Convair F-102A Delta Dagger and F-106 Delta Dart supersonic interceptors.
The Hustler is 96 feet, 10 inches (29.515 meters) long, with a wing span of 56 feet, 10 inches (17.323 meters) and an overall height of 31 feet 5 inches (9.576 meters). The wing’s leading edge is swept back at a 60° angle and the fuselage incorporates the “area rule” which resulted in a “wasp waist” or “Coke bottle” shape for a significant reduction in aerodynamic drag. The airplane’s only control surfaces are two “elevons” and a rudder, and there are no flaps. Four General Electric J79-GE-5 afterburning turbojet engines, producing 15,000 pounds of thrust, each, are suspended under the wings from pylons. The bomber had a cruise speed of 610 miles per hour (981.7 kilometers per hour) and a maximum speed of 1,325 miles per hour (2,132.4 kilometers per hour). The service ceiling is 64,800 feet (19,751 meters). Unrefueled range is 4,400 miles (7,081 kilometers). Maximum weight is 168,000 pounds (76,203.5 kilograms).
The B-58 weapons load was a combination of W-39, B43 or B61 nuclear bombs. The weapons could be carried in a jettisonable centerline pod, which also carried fuel. The smaller bombs could be carried on underwing hardpoints. There was a defensive 20 mm M61 rotary cannon mounted in the tail, with 1,200 rounds of ammunition and controlled by the Defensive Systems Officer.
Convair B-58A-10-CF Hustler 59-2441, Thompson Trophy winner, at Davis-Monthan AFB. (U.S. Air Force)
