Screaming Penguin - Source Does Matter

A mysterious "white powdery substance" was found on the football field at the Georgia Institute of Technology earlier today. Apparently the FBI had launched a large scale investigation in response to the incident.

Taken from headline news:

Football practice was delayed on Thursday for nearly two hours for the Georgia Tech Yellow Jackets. One of the players, while on his way to the locker room happened to look down and notice a suspicious looking, unknown white powdery substance on the practice field. Coach Chan Gailey was alerted and immediately suspended practice and called the police. The FBI was later called in to investigate. After a complete field analysis, the FBI determined that the white substance unknown to the Tech players was the goal line. Practice was resumed when the FBI decided that the team would not be likely to encounter the substance again.

(Taken from SportsCenter originally, adopted to tech, this has been used elsewhere, but thats the originator, credit where due.)