Witnesses: 

The Honorable Bill LaPlante

Under Secretary of Defense for Acquisition and Sustainment

Department of Defense

The Honorable Jill Hruby

Under Secretary for Nuclear Security

Department of Energy

and

Administrator

National Nuclear Security Administration

Dr. Vipin Narang

Principal Deputy Assistant Secretary of Defense for Space Policy

Office of the Under Secretary of Defense for Policy

Vice Admiral Johnny Wolfe Jr., USN

Director, Strategic Systems Programs

U.S. Navy

Lieutenant General Andrew Gebara, USAF

Deputy Chief of Staff for Strategic Deterrence and Nuclear Integration

U.S. Air Force