52nd Operations Group recieves new commander
SPANGDAHLEM AIR BASE, Germany -- U.S. Air Force Col. Robert Winkler, 52nd Operations Group commander, right, receives the 52nd guidon from U.S. Air Force Col. David Julazadeh, 52nd Fighter Wing commander, during a change of command ceremony June 28, 2013. Winkler accepted command from U.S. Air Force Col. David Lyons, the outgoing 52nd OG commander. A change of command is a military tradition that represents a formal transfer of authority and responsibility for a unit from one commanding officer to another. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)