Air Force Gen. Lori J. Robinson, the incoming commander of the North American Aerospace Defense Command and U.S. Northern Command, salutes during her arrival at the change of command ceremony, at Peterson Air Force Base, in Colorado Springs, Colo., Friday, May 13, 2016. Gen. Robinson is the first woman to lead a top-tier U.S. military command after taking charge Friday at NORAD and USNORTHCOM. (AP Photo/Brennan Linsley)
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