Aviation gunnery noise alert! Residents near U.S. Army Garrison Fort A.P. Hill may experience increased noise as result of aviation gunnery training today and tomorrow, September 26th and 27th, until approximately 10pm. Low cloud cover may cause higher noise and vibrations.Aviation gunnery noise alert! Residents near U.S. Army Garrison Fort A.P. Hill may experience increased noise as result of aviation gunnery training today and tomorrow, September 26th and 27th, until approximately 10pm. Low cloud cover may cause higher noise and vibrations.