A green smoke grenade marks the landing zone for a U.S. Army Task Force Thunder medevac helicopter arriving to evacuate wounded following what witnesses described as a car-bomb attack against an ... more 
A green smoke grenade marks the landing zone for a U.S. Army Task Force Thunder medevac helicopter arriving to evacuate wounded following what witnesses described as a car-bomb attack against an Afghan Army military checkpoint, in Sangin, Helmand province, Thursday Sept. 8, 2011. Witnesses described seeing several Afghan soldiers and civilians laying dead following the attack, and several wounded were evacuated. (AP Photo/Brennan Linsley) less 
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Associated Press | Photo By Brennan Linsley
Fri, Sep 9, 2011 3:59 AM EDT