Michael Griffin, U.S. undersecretary of defense for research and engineering, speaks Aug. 8 at the Space and Missile Defense Symposium in Huntsville, Alabama. Credit: U.S. Army

WASHINGTON — Undersecretary of Defense for Research and Engineering Mike Griffin and his deputy Lisa Porter notified their staffs on June 23 that they will be stepping down July 10.

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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...