18th AMDS welcomes new commander
Col. Frank Allara, 18th Medical Group commander, passes the 18th Aerospace Medicine Squadron guidon to Col. John Cotton, 18th AMDS commander, during a change of command ceremony on Kadena Air Base, Japan, June 18, 2014. The passing of the guidon symbolizes Cotton accepting his new responsibilities as commander of the 18th AMDS. Cotton comes from Misawa Air Base, Japan, where he served as the 35th AMDS commander and chief of aerospace medicine. (U.S. Air Force photo by Airman 1st Class Zade C. Vadnais)