Practice makes perfect
The U.S. Air Force Band plays “The Air Force Song” during rehearsal for the 57th Presidential Inaugural Parade, Jan. 10, 2013. The USAF Band and Honor Guard held their rehearsal at Joint Base Andrews, Md.,. Approximately 15,000 personnel from 133 units throughout the military will be participating in the parade on January 21, 2013. (U.S. Air Force photo/ Airman 1st Class Nesha Humes)(Released)

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