 Each Minuteman wing is assisted logistically by a nearby Missile Support Base (MSB).If the ground-based LCCs are destroyed or incapacitated, the Minuteman ICBMs can be launched by airborne missileers utilizing the Airborne Launch Control System.A request for proposal for development and maintenance of a Ground Based Strategic Deterrent (GBSD) next-generation nuclear ICBM, was made by the US Air Force Nuclear Weapons Center, ICBM Systems Directorate, GBSD Division on 29 July 2016.