A tiff between friends.

US forces in Afghanistan bombed a Pakistani border patrol after they were shot at by a Pakistani soldier, the US military has revealed.
A statement said that a B-52 dropped a bomb near the border town of Shkin after a Pakistani guard opened fire and wounded an American soldier.
He started shooting after being asked to return to his side of the border.
( BBC News)

I don’t know what I find funnier – that there is such good friendship between the two allies, or the fact that it is apparently standard procedure for American soldiers to call in B-52 bombers when under fire from even one guy.