6/19/2012 - U.S. Air Force Col. James Forrest, 17th Medical Group commander, passes the 17th Medical Support Squadron (MDSS) guidon to Lt. Col. Krissa Crawford at Goodfellow Air Force Base, Texas, June 14, 2012. Crawford assumed command of the 17th MDSS from Lt. Col. Tyler W. Sanders during a change of command ceremony. (U.S. Air Force photo by Staff Sgt. Austin Knox)