NORAD trains over Chicago skyline

July 21, 2009 5:34:28 AM PDT
While much of the Chicago area was asleep there was plenty of action in the skies over the city.The North American Aerospace Defense Command (NORAD) conducted a training exercise to practice intercept and identification operations.

F-16 planes and helicopters are part of the exercise.

The series of training flights are coordinated with the Federal Aviation Administration, Air Traffic Control and Customs and Border Protection