The National Transportation Safety Board (NTSB) said on Monday it is investigating the close call between a commercial Delta Air Lines flight and a group of Air Force jets flying near Reagan

A Delta passenger plane and an Air Force jet flew narrowly close to one another outside Washington, D.C., on Friday, prompting a collision warning and "corrective instructions" from air traffic controllers.

The U.S. National Transportation Safety Board said on Monday it will investigate a close call between a Delta Air Lines plane and a group of Air Force jets near Reagan Washington National Airport last week.