F-16s and other military aircraft will conduct a training exercise over D.C. between midnight and 2:30 a.m. Wednesday. (Photo by Senior Airman Krystal Ardrey /Air Force)

Other than late flights into Reagan National Airport, the skies over the District usually are quiet because of the no-fly zone imposed on the nation’s capital since 9/11. Beginning at around midnight and lasting until about 2:30 a.m. Wednesday, however, things will be different as the military conducts flights to practice intercepting planes with malicious intent.

The North American Aerospace Defense Command (NORAD) will conduct the exercise, using Air Force F-16 and C-21 aircraft, Civil Air Patrol C-182 aircraft, and a U.S. Coast Guard MH-65 Dolphin helicopter, officials said.

In the event of inclement weather, officials may decide to postpone or cancel the exercise. The exercise is comprised of training flights held in coordination with the Federal Aviation Administration, the National Capital Region Coordination Center, the Joint Air Defense Operations Center, and the Eastern Air Defense Sector.