Planes receive mysterious false mid-air collision alerts near Reagan National Airport

The Federal Aviation Administration is investigating why multiple commercial flights about to land at Reagan National Airport, near Washington D.C., repeatedly received midair collision alerts when there were no other aircraft nearby.

​ The Federal Aviation Administration is investigating why multiple commercial flights about to land at Reagan National Airport, near Washington D.C., repeatedly received midair collision alerts when there were no other aircraft nearby. Read More Breaking News, Latest News and Videos | CNN