The Army is pausing helicopter flights near a Washington airport after two commercial planes had to abort landings last week because of an Army Black Hawk helicopter that was flying to the

The Army said Monday that a helicopter unit was suspending flights to the Pentagon after an incident last week that led to two airliners being directed to abort landings.

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