evidence: WASHINGTON — The Pentagon on Thursday released the names of the 30 Americans who were killed when their helicopter was shot down in Afghanistan over the weekend. Those killed in the crash include 22 sailors — 17 of them Navy SEALs — assigned to East Coast and West Coat-based Naval Special Warfare units. Two soldiers assigned to the 2nd Battalion, 135th Aviation Regiment, three soldiers assigned to the 7th Battalion, 158th Aviation Regiment and three airmen assigned to 24th Special Tactics Squadron of Pope Field, N.C., also died. The Americans’ CH-47 Chinook helicopter was shot down in Wardak province in eastern Afghanistan, apparently by a Taliban-fired rocket-propelled grenade. The helicopter had been part of a mission targeting a Taliban leader.