U.S. Air Force Col. John Lynch, newly appointed commander of the 18th Aerospace Medicine Squadron, is congratulated by Col. Barbara King, 18th Medical Group commander, and Col. Richard Baker, former 18th AMDS commander, during the 18th AMDS change of command ceremony on Kadena Air Base, Japan, Aug. 1, 2012. (U.S. Air Force photo/Junko Kinjo)