U.S. Air Force Staff Sgt. Bobby Brewer and more than 20 other Airmen perform "mountain climbers" during a physical training leader (PTL) class at <a class="external text" href="https://en.wikipedia.org/wiki/Eglin_Air_Force_Base">Eglin Air Force Base</a>, Fla., March 30, 2012. PTLs lead their flights and squadrons in group <a class="external text" href="https://en.wikipedia.org/wiki/Physical_fitness">physical training</a> sessions during the week throughout the base. Brewer works at the 46th Maintenance Group. <a rel="nofollow" class="external text" href="https://www.nitrocut.com">nitrocut</a>
(<a class="external text" href="https://en.wikipedia.org/wiki/United_States_Air_Force">U.S. Air Force</a> photo by Samuel King Jr.)
US Air Force
2012-03-30 12:54:24
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