1957 August 12 - Launch Vehicle: Navaho. LV Model: Navaho G-26 . Navaho II SM-64 09 Navaho G-26 Flight 5 Agency: USAF. Apogee: 25 km (15 mi). After a 15 hour 18 minute countdown G-26 number four finally left the pad. The boost phase was completed successfully; but then a guidance system malfunction prevented the cruise stage from separating from the booster until an altitude of 25 km was reached. However the autopilot successfully overcome drastic pitch oscillations created by the lofted trajectory, and the ramjets were successfully ignited. The stage cruised at Mach 2.93 for 280 km. However then the vehicle began drifting off course. The ground pilot banked, but the fuselage screened the airflow to the left ramjet intake, resulting in that engine flaming out. The vehicle lost speed and altitude, and the right engine flamed out a minute later. The missile was ordered into a terminal dive, impacting 425 km downrange.

1958 August 15 - 04:16 GMT - Launch Vehicle: Jason. Jason Jason 1822 Nuclear test observation mission Agency: USAF. Apogee: 693 km (430 mi).

1958 August 27 - 03:33 GMT - Launch Vehicle: Jason. Jason Jason 1909 Nuclear test observation mission Agency: USAF. Apogee: 937 km (582 mi).

1958 August 30 - 04:31 GMT - Launch Vehicle: Jason. Jason Jason 2022 Nuclear test observation mission Agency: USAF. Apogee: 878 km (545 mi).

1958 August 30 - 06:36 GMT - Launch Vehicle: Jason. Jason Jason 2025 Nuclear test observation mission Agency: USAF. Apogee: 699 km (434 mi).

1958 August 31 - 00:07 GMT - Launch Vehicle: Jason. Jason Jason 2020 Nuclear test observation mission Agency: USAF. Apogee: 800 km (490 mi).

1958 September 2 - 22:15 GMT - Launch Vehicle: Jason. Jason Jason 2043 Nuclear test observation mission Agency: USAF. Apogee: 789 km (490 mi).

1959 February 16 - Launch Vehicle: Draco. Test mission Agency: USAF. Apogee: 30 km (18 mi).

1959 March 16 - Launch Vehicle: Draco. Test mission Agency: USAF. Apogee: 30 km (18 mi).