The 55th Electronic Combat Group at Davis-Monthan AFB, Ariz., has sent its last Block 20 EC-130H Compass Call aircraft to a Waco, Tex., depot for upgrades to its avionics and mission systems. The upgrade effort for the Block 20 Compass Call aircraft began in 1996. Tail No. 989, which has flown during Desert Storm and Allied Force and current operations in Afghanistan and Iraq, will return to Davis-Monthan as a Block 35. (USAF photo release)
Northrop Grumman test fired its newest solid rocket motor Dec. 4, part of an internally funded effort to rapidly design and build SRMs using advanced manufacturing techniques.
