This remarkable story is no hoax. On October 24, 2008 between 2:00 AM and 4:30 AM, the FAA tracked 30 to 40 targets that it admits were unknown over Pennsylvania. Graded A.
Story Source:
http://www.ufoeyes.com/2011/02/08/what-did-faa-radar-track-over-pennsylvania-in-october-2008/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed:+ufoeyes+%28ufoeyes%29