Syrian rebel fighter, Aleppo.
Masai Mara national park, Kenya
U.S. Marines from Bravo Company, 1st Battalion, 6th Marines, Lance Corporal Chris Sanderson, (rear) and Sergeant Travis Dawson, (front) protect an Afghan man and his child after Taliban fighters opened fire in the town of Marjah, in Helmand province, on February 13, 2010. U.S.-led NATO troops launched an offensive against the Taliban's last big stronghold in Afghanistan's most violent province and were quickly thrown into a firefight with the militants. (Reuters/Goran Tomasevic)