CST-100 Starliner launch abort engine
A launch abort engine, developed by Aerojet Rocketdyne for Boeing's CST-100 Starliner spacecraft, fires during a 2016 test. A static-fire test of the complete launch abort system suffered a propellant leak at the end of the test. Credit: Aerojet Rocketdyne

WASHINGTON — Lockheed Martin announced Feb. 13 it has decided to terminate a $4.4 billion deal to acquire rocket engine manufacturer Aerojet Rocketdyne.

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Sandra Erwin writes about military space programs, policy, technology and the industry that supports this sector. She has covered the military, the Pentagon, Congress and the defense industry for nearly two decades as editor of NDIA’s National Defense...