ELLSWORTH AFB, S.D. - Tech. Sgt. Zachary Renner, 372nd Training Squadron Detachment 8 instructor, opens a valve on a pneumatic manifold to purge an air hose, Sept. 27. The hose must be purged to ensure it is clear of debris before connected to a pneumatic air bag. The 28th Maintenance Squadron repair and reclamation section is responsible for crash recovery; they manage clean-up efforts in the event of an aircraft incident on the airfield. (U.S. Air Force photo/Staff Sgt. Marc I. Lane)