We’re not sure what’s happening here. But a Coast Guard vessel has apparently just opened fire (though perhaps just as warning shots) on a vessel in a restricted zone on the Potomac River.

Late Update: Conflicting and more very odd details. The Coast Guard is now reportedly denying that shots were fired and there is some questions — unconfirmed reports — that the whole thing may have been a training exercise of some sort. We’ll keep you posted on the latest we hear.