"An Afghan policeman conducting a joint operation with U.S. soldiers opened fire on the Americans, killing two of them before fleeing, an Afghan official said Saturday, raising fears that militants have infiltrated the ranks of Afghan forces. The U.S. military earlier said two American troops died in a firefight in Wardak on Friday, but declined to confirm any new details. Although Afghan forces have periodically turned their guns on international troops, training and working jointly with Afghan police and soldiers on patrols and operations are key to the U.S. strategy of curbing the spreading Taliban-led insurgency."
Which is worse? That our "allies" are shooting our troops, or that our military initially covered it up?