A training exercise to maintain the region’s air defense readiness is scheduled to take place above Washington for several days this week, according to military officials.

The operation known as Falcon Virgo is slated to begin late Thursday and continue through early Sunday.

Officials said the training flights, coordinated with the North American Aerospace Defense Command, one of its three regional components, the Federal Aviation Administration and the Civil Air Patrol, will take place from 11:30 p.m. to 1:30 a.m. and 2:30 to 5:30 a.m.

The military has regularly conducted such preparedness exercises throughout North America since the 9/11 terrorist attacks.

A civilian Beechcraft King Air airplane will also conduct calibration flights between 12:30 and 2:30 a.m. Thursday, officials said.

The flurry of flight activity often draws the attention of Washingtonians who may hear an unusual amount of flight noise during the overnight hours.