Thor Delta Echo 1A launch vehicle at Launch Complex 17A, 12 August 1960 Published on August 12, 2012 in 12 August 1960, 09:39:43 UTCFull resolution (1529 × 1903) Next → The Thor Delta launch vehicle at LC-17A, Cape Canaveral Air Force Station. The spherical capsule containing the Echo 1A is visible at the top of the Altair solid fuel third stage. m(NASA)