Col. E. John Teichert (left), 11th Wing commander, passes the 11th Medical Group guidon to Col. Leslie Knight, 11the MDG commander, during an inactivation ceremony June 16, 2017 at Joint Base Andrews, Md. The ceremony, presided over by Maj. Gen. Darryl Burke, Air Force District of Washington commander, marked the in-activation of the 79th Medical Wing and the activation of the 11th Medical Group.(Photo by Staff Sgt. Joe Yanik)