U.S. Air Force Col. Nancy Bozzer, 100th Operations Group commander, salutes the U.S. flag as it’s lowered during the monthly retreat ceremony March 28, 2014, on RAF Mildenhall, England. Retreat is a long-standing tradition honoring the flag and signaling the end of the duty day. A retreat ceremony, in which the honor guard retires the U.S. flag and Royal Air Force ensign, typically takes place the last Friday of every month. (U.S. Air Force photo by Airman 1st Class Preston Webb/Released)