A significant security incident unfolded at Reagan National Airport, leading to the halting of all flights in and out of the airport following a reported bomb threat on a United Airlines flight from Houston. The FAA issued a ground stop, causing chaos as passengers were evacuated from the affected plane. Multiple reports confirmed that the aircraft was isolated on the east end of the airport while authorities assessed the situation. After over an hour of ground stop, flights resumed once the threat was resolved. Passengers have been safely escorted off the plane, with no further immediate danger reported.