Col. Mark Barrett, 1st Fighter Wing commander, hands the guidon to Col. Tyrone Strachan, the incoming 1st Maintenance Group commander, while Chief Master Sgt. Dennis Krebs, 1st MXG superintendent, stands ready to receive the guidon during the 1st MXG change of command ceremony here June 15. Previously, Colonel Strachan served as the deputy commander the of the 18th Maintenance Group at Kadena Air Base, Japan and before that, he commanded Langley's 1st Aircraft Maintenance Squadron. (U.S. Air Force photo/Senior Airman Tabitha Kuykendall)