CITIZEN CEREMONY U.S. soldiers and Marines from 21 countries swear allegiance to the United States as new citizens at a naturalization ceremony on Bagram Air Field, Afghanistan, May 26, 2008. Because of their active duty service in the armed forces, these troops were granted citizenship. SHARE IMAGE: Download Image: Full Size (0.08 MB) Photo By: VIRIN: 590829-T-BNE50-771.jpg Photo Gallery