All NORAD exercises are carefully planned and closely controlled. Falcon Virgo is a recurring exercise in support of Operation NOBLE EAGLE, which places emphasis on the surveillance and control of airspace over Canada and the United States. The defense of North America is NORAD’s top priority and we are on alert around the clock, every day.

https://www.norad.mil/Newsroom/Press-Releases/Article/1932124/norad-air-defense-exercise-planned-for-national-capital-region/