Daniel A. Quintana, 30
Quintana was killed Sept. 10 in Paktika province, Afghanistan, when insurgents attacked his unit using small arms fire. Quintana was an Air Force police officer in 2003 when he decided he wanted to be a soldier and fight on the front lines. He enlisted in the Army in 2005 and served his first combat tour in Iraq in 2008.
Sources: Times research, Defense Department, iCasualties.org