The Eastern Oregon Regional Airport will come under assault Monday by an elite military team supported by an array of specialized aircraft.

Don’t be alarmed. They’re on our side. And it’s only a drill.

The 2nd Battalion, 75th Ranger Regiment, a U.S. Army unit stationed at Joint Base Lewis-McChord, Washington, returns Monday through Thursday to Pendleton, where it staged a similar exercise 10 years ago, said Ranger spokeswoman Tracy A. Bailey of Fort Benning, Ga. Expect plenty of noise, particularly aircraft noise, during the two nights the 800-member contingent is practicing it’s airfield seizure tactics, Bailey said. The Rangers use noisy simulated munitions and pyrotechnics as well.

She said the Army knows the exercise makes a racket and it appreciates the city’s indulgence those two nights.