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

The Army is pausing helicopter training flights around the Pentagon after a Black Hawk on Thursday forced two commercial airplanes to abort landings at Washington’s Ronald Reagan National Airport, three Army officials confirmed Monday.

The U.S. Army has once again suspended helicopter flights in the area around the Pentagon after two civilian flights were forced to change course near Reagan Airport outside Washington, D.C. Transportation Secretary Sean Duffy responded to the decision.