The U.S. Army Clears Full-Rate Production Of Northrop Grumman’s CIRCM (Common Infrared Countermeasures) The U.S. Army Clears Full-Rate Production Of Northrop Grumman’s CIRCM (Common Infrared Countermeasures) An aircrew from 3rd Assault Helicopter Battalion, 227th Aviation Regiment, 1st Air Cavalry Brigade, 1st Cavalry Division taxis out of the Redstone Test Center Airfield at Redstone Arsenal, Ala. to an air assault mission during operational testing of the CIRCM. In the box: one of the jammers of the Common Infrared Countermeasure (CIRCM) system. (Photos: U.S. Army/ Northrop Grumman) The new CIRCM system will equip all the service’s current helicopters, beginning from the UH-60M Black Hawk, and the Future Vertical Lift helicopters in development.