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 Pentagon.The commander of the 12th Aviation Battalion directed the unit to pause helicopter flight operations around Ronald Reagan Washington National Airport following Thursday’s close calls,

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.

A Virginia-based helicopter unit will pause flights pending the outcome of an internal inquiry, an Army spokeswoman said.