evidence: KABUL, Afghanistan — A military helicopter crashed in eastern Afghanistan, killing 30 U.S. special operation troops — most of whom were Navy SEALs from "Team Six," the unit that carried out the raid that killed Osama bin Laden, officials said. Seven Afghan commandos were also killed. An American official said it was apparently shot down, in the deadliest single incident for American forces in the decade-long war. [...] The death toll would surpass the worst single day loss of life for the U.S.-led coalition in Afghanistan since the war began in 2001 — the June 28, 2005 downing of a military helicopter in eastern Kunar province. In that incident, 16 Navy SEALs and Army special operations troops were killed when their craft was shot down while on a mission to rescue four SEALs under attack by the Taliban. Three of the SEALs being rescued were also killed and the fourth wounded. It was the highest one-day death toll for the Navy Special Warfare personnel since World War II.