Passengers walk off a US Airways flight at Philadelphia International Airport, after the plane returned to the airport, Thursday, Sept. 6, 2012, in Philadelphia. Airport spokeswoman Victoria Lupica ... more 
Passengers walk off a US Airways flight at Philadelphia International Airport, after the plane returned to the airport, Thursday, Sept. 6, 2012, in Philadelphia. Airport spokeswoman Victoria Lupica says US Airways Flight 1267 returned to the airport Thursday morning as a "precaution." Footage from WCAU-TV showed a person being escorted off the plane by law enforcement officials and police dogs on the tarmac. An FBI spokesman did not immediately comment on the situation.(AP Photo/Matt Rourke) less 
1 / 28
Associated Press | Photo By Matt Rourke
Thu, Sep 6, 2012 10:07 AM EDT