Tonight you will probably be hearing a bunch of noise in up above if you live in the West Valley according to ABC15 because the military will be conducting military exercises tonight from 7pm to 11am in this area.
"The community may see an increased amount of military aircraft during those times. The specific types include the MV-22, AH-1, CH-1, CH-53, MH-60, AV-8, and others flying over the Valley. Pilots are expected to primarily fly over Phoenix and Glendale, focusing on an area east of the Glendale Airport and near 43rd Avenue and Camelback Road."
So if you hear these planes, don't be alarmed and make sure you check it out!