Booster delivery
Senior Airman Derek Baker, 341st Missile Maintenance Squadron missile handling team technician, uses a hand-held controller to lower the 341st Missile Wing’s 150th Minuteman III solid-propellant replacement booster into launch facility Echo-08 Aug. 18. The Propulsion Replacement Program, or PRP, extends the service life of the missile through 2020. The first MMIII replacement booster was delivered in April 2001. (U.S. Air Force photo/Staff Sgt. Eydie Sakura)