U.S. Air Force Col. Anthony Retka, left, 52nd Operations Group commander, passes the ceremonial guidon to Lt. Col. Martin Mentch, right, incoming 52nd OG Detachment 1 commander, during the 52nd OG Det. 1 change of command ceremony at Krzesiny Air Base, Poland, June 19, 2019. The mission of Det. 1 is to foster bilateral defense ties, enhance regional security and increase interoperability among NATO allies through combined training exercises with periodic rotational aircraft. (U.S. Air Force photo by Staff Sgt. Jonathan Snyder)