31 Americans, 7 Afghans killed in helicopter crash

August 6, 2011 12:00:00 AM PDT
A military helicopter was shot down in eastern Afghanistan, killing 31 U.S. special operation troops, most of them from the elite Navy SEALs unit that killed al-Qaida leader Osama bin Laden, along with seven Afghan commandos. It was the deadliest single incident for American forces in the decade-long war.