Retired U.S. Marine Corps Cpl. William Kyle Carpenter poses with friends on the David Letterman studio, New York City, Ny., June 25, 2014. Cpl. Kyle Carpenter traveled to New York, North Carolina, Washington, D.C., and San Diego, Calif., as part of the tour after he was awarded the Medal of Honor on June 19, 2014. (U.S. Marine Corps photo by Cpl. Michael C. Guinto/Released)