The U.S. Army is set to continue training exercises involving low flying "black helicopters" over Minneapolis and St. Paul tonight despite residents and local officials expressing outrage at the danger posed by the unannounced drills.

With the agreement of local police departments, the 160th Special Operations Aviation Regiment out of Fort Campbell Kentucky has been conducting the exercises, which involve low flying Night Stalker black hawk helicopters buzzing over rooftops and in between buildings, since Monday and will continue with the drills through until Thursday evening.

Similar drills were conducted over the twin cities in 2012, before which police gave residents three days notice. This time the exercises were completely unannounced, prompting panicked locals to flood 911 and non-emergency lines.

With both law enforcement and the Army refusing to divulge precisely what the exercise is supposed to accomplish, residents and city councilors complained bitterly at taxpayer money being wasted on the exercise.