Building a leader
The U.S. Air Force Thunderbirds fly over Wrigley Field, prior to the start of their Friday practice for the Chicago Air and Water Show, 14 August 2009. The Thunderbirds represent the nearly 700,000 active duty, Air National Guard, Air Force Reserve and civilian Airmen serving in the United States and overseas. (U.S. Air Force photo by Capt. Kristi Machado)

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Photo by: Capt. Kristi Machado |  VIRIN: 180706-F-XX000-0003.JPG