The National Transportation Safety Board is investigating the aborted landings of two commercial flights approaching Reagan National Airport on Thursday as a US Army Black Hawk helicopter was approaching the Pentagon nearby.

An Army Black Hawk helicopter caused two near-misses with airliners at Ronald Reagan Washington National Airport last week — including passing as little as 200 feet from one jet — after the pilot took “the scenic route” to the Pentagon,

An Army helicopter flying in the D.C. airspace Thursday forced two commercial passenger jets inbound to Ronald Reagan Washington National Airport to perform go-around maneuvers — roughly three months after the airport was the site of the nation's worst aviation fatality in more than two decades.