A Black Hawk helicopter crashes in Afghanistan , a U.S. military official says . All four of its crew members -- all of them American -- are believed to be dead . - The Taliban claims responsibility for the attack on an Afghan army base that killed at least 10 people and wounded dozens more.
A Black Hawk helicopter crashes in Afghanistan , a U.S. military official says . All four of its crew members -- all of them American -- are believed to be dead . Troops waiting to be picked up saw the aircraft go down , the official says .