S.D. ANG visits D-M
U. S Air Force Master Sgt. Chris Thesenvitz, 114th Aircraft Maintenance Squadron crew chief, assists Lt. Col. Todd Sheridan, 114th Fighter Wing pilot, with his harness while getting ready for take-off at Davis-Monthan Air Force Base, Ariz., Jan. 23, 2013. The South Dakota Air National Guard was at D-M for Operation Snowbird, which gives northern ANG units a chance to conduct mandatory training in the optimal weather while using Southern Arizona’s military ranges. (U.S. Air Force photo by Airman 1st Class Betty R. Chevalier/released)