Air Force’s new intercontinental ballistic missile system
Shown is an illustration of the LGM-35A Sentinel, the Air Force’s newest weapon system known as the Ground Based Strategic Deterrent. The construction phase of Sentinel, the Air Force’s multi-billion-dollar missile modernization effort, was cleared for takeoff May 19 as Robert Moriarty, Deputy Assistant Secretary of the Air Force for Installations, signed the project’s environmental record of decision. (U.S. Air Force illustration)