From CNN:
Just the kind of doctor I wanted: The kind that shows great judgment.

Law enforcement sources told CNN Friday the three medical students who were stopped as a result of a possible terrorist threat may have been playing a prank on a restaurant patron, who overheard them talking and laughing about September 11.

A federal law enforcement source said investigators were considering that theory strongly, and that he would "be very surprised" if it were not true...

The three medical students were pulled over in the early hours Friday following an alert issued for one of their vehicles after Eunice Stone said she overheard the three men making the suspicious comments in a Shoney's restaurant in north Georgia.

Stone, who was eating with her 18-year-old son, said the men were laughing about the terrorist attacks on the United States and even made a comment that if Americans "were sad on 9/11, wait until 9/13."