 The Center is home to the US Army Aviation Technical Test Center (ATTC), which conducts developmental aircraft testing for Army Aviation.The United States Army Operational Test and Evaluation Command's Test and Evaluation Coordination Office and TH-67 primary and instrument training are both located at Cairns Army Airfield.Operational units on the post include the 1st Aviation Brigade and the 110th Aviation Brigade handling Army Aviation training, and the USAF 23d Flying Training Squadron for the training of Air Force helicopter pilots and air crew.