A US Blackhawk helicopter from Task Force 1-30 Aviation, carrying 5th Special Forces Group airborne soldiers, is silhouetted during take-off in the Kuwaiti desert, 50 km south of the Iraqi border, in this November 19, 1998, file photo. A US helicopter supporting  a strike by American special forces troops into Afghanistan crashed in a landing accident in Pakistan on Saturday, killing two crew members and injuring others, a senior defense official  said.— REUTERS