When United Launch Alliance’s final Delta ... Jupiter IRBM that was being produced by the Army. A pair of vernier engines helped to steer the missile, providing roll control. The Thor missile ...

hence the vehicle was called the Thor-Delta.) Related: Meet the Delta Rocket Family of the United Launch Alliance Three months later, the Thor-Delta deployed Echo IA into orbit, leading to the ...

CAPE CANAVERAL, Fla. (WFLA) — The United Launch Alliance launched the final Delta Heavy rocket on Tuesday afternoon. The rocket, launching the NROL-70 mission for the National Reconnaissance ...