1961 September 23 - 20:36 GMT - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-2 Mk 4 re-entry vehicle research and development mission Agency: USAF. Apogee: 1,000 km (600 mi). Launched from Titan II silo

1962 February 23 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-18 FAILURE: Failure. Research and development Cat II / operational test Agency: USAF AFSC. Apogee: 50 km (31 mi).

1962 May 4 - 21:43 GMT - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-34 Research and development Category II test Agency: USAF AFSC. Apogee: 1,000 km (600 mi).

1962 October 6 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-35 Research and development Category II test Agency: USAF AFSC. Apogee: 1,000 km (600 mi).

1962 December 5 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-11 Research and development Category II test Agency: USAF AFSC. Apogee: 1,000 km (600 mi).

1963 January 29 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-8 Research and development Category II test Agency: USAF AFSC. Apogee: 1,000 km (600 mi).

1963 April 5 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I V-1 Research and development launch Agency: USAF AFSC. Apogee: 1,000 km (600 mi).

1963 May 1 - 10:15 GMT - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I V-4 FAILURE: Failure. Research and development launch Agency: USAF AFSC.

1963 August 15 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-7 Demonstration and shakedown operations launch Agency: USAF SAC. Apogee: 1,000 km (600 mi).

1963 November 14 - Launch Vehicle: Titan. LV Model: Titan 1 . Titan I SM-68 Demonstration and shakedown operations launch Agency: USAF SAC. Apogee: 1,000 km (600 mi).