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50 OSS welcomes new CC

Col. Toby Doran, 50th Operations Group commander, hands the 50th Operations Support Squadron’s guidon to the squadron’s new commander, Lt. Col. David Gallagher, during the unit's change of command ceremony Monday, June 26, 2017 at Schriever Air Force Base, Colorado.  Gallagher was preceded by Lt. Col. Timothy Purcell.  (U.S. Air Force Photo/Dennis Rogers)

Col. Toby Doran, 50th Operations Group commander, hands the 50th Operations Support Squadron’s guidon to the squadron’s new commander, Lt. Col. David Gallagher, during the unit's change of command ceremony Monday, June 26, 2017 at Schriever Air Force Base, Colorado. Gallagher was preceded by Lt. Col. Timothy Purcell. (U.S. Air Force Photo/Dennis Rogers)

Lt. Col. David Gallagher renders his first salute to members of the 50th Operations Support Squadron after assuming command Monday, June 26, 2017 at Schriever Air Force Base, Colorado. The 50 OSS leads operational training programs and policies to ensure combat readiness for the DoD's largest satellite wing with hundreds of operators and multiple operational squadrons operating 70 satellites worth more than $50 billion. . (U.S. Air Force Photo/Dennis Rogers)

Lt. Col. David Gallagher renders his first salute to members of the 50th Operations Support Squadron after assuming command Monday, June 26, 2017 at Schriever Air Force Base, Colorado. The 50 OSS leads operational training programs and policies to ensure combat readiness for the DoD's largest satellite wing with hundreds of operators and multiple operational squadrons operating 70 satellites worth more than $50 billion. . (U.S. Air Force Photo/Dennis Rogers)

SCHRIEVER AIR FORCE BASE, Colo. -- Col. Toby Doran, 50th Operations Group commander, hands the 50th Operations Support Squadron’s guidon to the squadron’s new commander, Lt. Col. David Gallagher, during the unit's change of command ceremony Monday, June 26, 2017 at Schriever Air Force Base, Colorado. Gallagher was preceded by Lt. Col. Timothy Purcell. (U.S. Air Force Photo/Dennis Rogers)
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