Col. Sterling Tree, right, passes the 339th Flight Test Squadron guidon to Col. Christopher Zidek, 413th Flight Test Group commander, during a change of command ceremony Sep. 21, 2018, at the Museum of Aviation, Warner Robins, Ga. Tree relinquished command of the unit to Lt. Col. John Lesho.

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Size: 1732px × 1155px
Photo credit: © David Wa / Alamy / Afripics
License: Licensed
Model Released: No

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