WASHINGTON (AP) — 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.

Two flights at Reagan Airport did go-arounds due to a nearby Blackhawk. An NTSB investigation is underway following changes after a deadly January crash.

The US Army is suspending helicopter training flights around the Pentagon and Ronald Reagan Washington National Airport as authorities investigate an incident last week that saw two passenger jets abort landings to avoid a Black Hawk in the area.