US Troops Battle Rising Iraq Insurgency

RAMADI, IRAQ - JANUARY 15: A fellow soldier honors slain U.S. Army PFC Ming Sun, age 20 and a naturalized American citizen, at a memorial ceremony January 15, 2007 in Ramadi in Iraq's Anbar province. Sun was shot and killed by an insurgent sniper on January 9, 2007 while on combat operations with his unit from A Company 1st Battalion, 9th Infantry Regiment in Sufia, east of Ramadi. Sun was born in China and became an American citizen after moving to the United States with his family in 1996. U.S. forces and insurgents battle daily in the Ramadi area, which has some of the highest American casualty rates of the war. (Photo by John Moore/Getty Images)