A pair of F-22A Raptors from the Hawaii‘i Air National Guard's 199th Fighter Squadron were scrambled to escort an American Airlines A321 arriving from LAX. N126AN (msn 6313), flying as AAL31, was subject to an attempted cockpit breach by a passenger, who was prevented then restrained by passengers and crew. An in-flight emergency was reported by the flight crew, and the FAA requested the HANG escort. The flight landed on Runway 4R without incident, while first responders readied to enter the airliner, which parked on the North Ramp. Crews from the HNL ARFF, Hawaii State Sheriff deputies, Honolulu Police, the FBI, and Homeland Security are investigating the incident.