The Gazette -Helicopters from the Cheyenne Mountain Air Force Station will perform flood mitigation work on Cheyenne Mountain on Tuesday, which will create noise and dust, according to a news release. The choppers will be lifting equipment to drop-off areas on Cheyenne Mountain from 8 a.m. to 6 p.m. People in the area can expect to see dust and hear the helicopters as they drop off equipment.