WASHINGTON — If you think you’re hearing planes flying over your house early Thursday morning, you probably are — but it’s nothing to worry about.
The North American Aerospace Defense Command is conducting exercise in the National Capital Region until 5:30 a.m. The exercise includes Civil Air Patrol aircraft, Air Force F-16s and a U.S. Coast Guard MH-65 Dolphin helicopter.
Follow @WTOP on Twitter and WTOP on Facebook.