POW/MIA OBSERVANCE Chairman of the Joint Chiefs of Staff U.S. Marine Gen. Peter Pace, Patricia Scharf, widow of Col. Charles Scharf, and Defense Secretary Robert M. Gates, render honors during the national anthem during a POW/MIA Recognition Day ceremony at the Pentagon, Sept. 21, 2007. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 967797-E-ZLW42-728.jpg Photo Gallery