This is very strange.
Machine gun fire was reported this week from military helicopters flying over Interstate 395 in downtown Miami.
Following reports of a military exercise occurring in Miami this week, KTRK-TV shot video of military-style helicopters roaming the skies in Houston, Texas. There have also been several reports of gunfire in the area.
In June of 2012 the Department of Defense started running military drills in the streets of St. Louis City. Local residents were warned to not be alarmed at the sight of U.S. Army tanks rolling through residential neighborhoods.