The Army is pausing 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 flight operations around Ronald Reagan Washington National Airport following Thursday’s close calls, two Army officials confirmed to The Associated Press.

It comes after 67 people died in January when a passenger jet collided with a Black Hawk helicopter at Reagan airport.

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The officials spoke on the condition of anonymity to provide details not publicly announced. The unit is continuing to fly in the greater Washington, D.C., region.

Thursday’s incident involved a Delta Air Lines Airbus A319 and a Republic Airways Embraer E170, according to the National Transportation Safety Board.

They were instructed around 2:30 p.m. by air traffic control to “perform go-arounds” because of a “priority air transport” helicopter, according to an emailed statement from the Federal Aviation Administration.

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The priority air transport helicopters of the 12th battalion provide transport service to top Pentagon officials. It was a Black Hawk priority air transport known as PAT25 that collided with the passenger jet in midair in January.

That crash was the worst U.S. midair disaster in more than two decades. In March, the FAA announced that helicopters would be prohibited from flying in the same airspace as planes near Reagan airport.