caption: A U.S. Air Force F-15 Eagle taxis to the runway during temporary duty operations in Tucson, Ariz., Jan. 21, 2020. For two weeks the 173rd Fighter Wing flew the adversary air portions of sorties for the F-16 pilot training operations freeing up cockpit space for more student training. (U.S. Air National Guard photo by <PERSON>. <PERSON>)
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