U.S. Army Maj. Nidal Hasan is charged with a 2009 killing spree that killed 13 people at Fort Hood in Texas. Homegrown terrorism by Muslim Americans has been growing over the past decade.
A U.S. Predator drone flies through the night sky over Kandahar Air Field in Afghanistan. Such drones have been targeting groups such as the Haqqani network that are accused of attacking U.S. and Afghan forces.
Pakistani Air Force personnel guard an air base northwest of Islamabad earlier today. It was attacked Thursday by militants armed with guns, rocket launchers and suicide vests.
Aamir Qureshi /AFP/Getty Images