7/31/2012 - Lt. Col Mary O'Loughlin, 374th Medical Operations Squadron outgoing commander, passes the unit guidon to Col. Eveline Yao, commander of the 374th Medical Group, during the 374 MDOS change of command at Yokota Air Base, Japan, July 30, 2012. The passing of the guidon symbolizes the passing of responsibility, a tradition dating back to Roman times. (U.S. Air Force photo by Airman 1st Class Krystal M. Garrett)

7/31/2012 - Maj. Randy Claxton, 374th Medical Operations Squadron incoming commander, salutes his squadron for the first time during the 374 MDOS change of command ceremony at Yokota Air Base, Japan, July 30, 2011. Claxton served as Chief, Medical Current Operation for the office of the Air Force Surgeon General at the Pentagon in Washington. (U.S. Air Force photo by Airman 1st Class Krystal M. Garrett)