Today, United Airlines flight 27, JFK-SFO was diverted to ORD because a man was reported to be carrying some suspicious materials. When the man's belongings were searched, all that was found was an MP3 player and homeopathic medicine. The flight continued on to SFO a few hours later. Another scare at SFO yesterday when a TACA flight to San Salvador was 5 hours delayed due to a bomb scare from a passenger on board.
Here's the link: http://abclocal.go.com/wabc/news/wabc_042605_planediverted.html