; and (ii) in such form, and containing such information, as the Administrator shall by regulation prescribe; and (B) require law enforcement personnel to— (i) monitor the airport to prevent violations of paragraph (1); and (ii) escort any individual described in paragraph (3)(B)(ii) who is discovered by such personnel to be in possession of a firearm described in paragraph (3)(B)(i), to ensure that such individual continues to be excepted from paragraph (1) by reason of being an individual described in paragraph (3)(B). (3) Exceptions The following individuals shall not be prohibited by paragraph (1) from possessing a firearm under such paragraph: (A) Individuals authorized to carry a firearm An individual who, by regulation, is authorized by the Administrator of the Federal Aviation Administration or the Administrator of the Transportation Security Administration to carry a firearm at the covered airport. (B) Travelers An individual who possesses a firearm, if— (i) the firearm is unloaded, carried in a hard-sided container that is locked, and the key or combination to the lock is in the exclusive possession of the individual; and (ii) the individual— (I) is carrying a ticket in the name of the individual for a flight that is scheduled for departure from the covered airport within 24 hours or that has arrived at the airport within the preceding 24 hours