Between 11 a.m. and 1 p.m., the U.S. Air Force will participate in "Felix Hawk,'' an air defense exercise which will involve a series of training flights in the Los Angeles area, according to the North American Aerospace Defense Command Region (NORAD).
The exercise includes flights by U.S. Air Force F-16 and C-21 aircraft provided by the 144th Fighter Wing, a unit of the California Air National Guard.
According to Tech. Sgt. Charles Vaughn of 144th Fighter Wing, "Felix Hawk" is an intercept training exercise.
"In this particular case, there will be another unit providing an aircraft that is not responding properly to the authorities," he explained. "[NORAD] will notify a unit to launch an intercept to see if something is wrong, if they just have a radio out, or if it's actually just a non-friendly aircraft in the area."
Vaughn did know how many fighter planes will participate in today's excercises, but Vaughn said it typically takes two aircraft to scope out the alert.
The aircraft will come from March Air Reserve Base in Riverside County.
A spokesman from NORAD was unavailable for comment.