Col. Paul Toth, 90th Medical Group commander, passes the guidon to Lt. Col. Deborah Willis, 90th Healthcare Operations Squadron, during the 90 HCOS change of command ceremony July 1, 2021, at Trails End on Warren Air Force Base, Wyoming. The ceremony signified the transition of command from Col. David Barker to Willis.

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Photo credit: © Operation 2021 / Alamy / Afripics
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Keywords: 90, hcos, healthcare, operations