The U.S.A.F. Thunderbirds were in Colorado Springs to perform for the Air Force Academy Graduation in May 2014.
American Kennel Club via CNN
Ben A. Pruchnie/Getty Images for Walt Disney Studios
Library of Congress [Public domain], via Wikimedia Commons
Frazer Harrison/Getty Images
Darren McCollester/Getty Images
Giuseppe Bellini/Getty Images
National Archives and Records Administration
National Park Service
iStock / kroach
Library of Congress
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