Player Embed Code: Download Embed Share Senate Subcommittee Hears Testimony on Missile Defense Policy, Programs Defense.gov March 22, 2018 | 01:09:14 John C. Rood, undersecretary of defense for policy; Air Force Gen. Lori J. Robinson, commander of North American Aerospace Defense Command and U.S. Northern Command; Air Force Lt. Gen. Samuel A. Greaves, commander of the Missile Defense Agency; and Army Lt. Gen. James H. Dickinson, commander of the U.S. Army Space and Missile Defense Command, testify on ballistic missile defense policies and programs and the fiscal year 2019 budget request at a hearing of the Senate Armed Services Committee's strategic forces subcommittee, March 22, 2018.