That happened to me back in 2013. We had suspicious people on our flight who were refusing to sit down the entire trip. Pilot received a bomb threat. They flew us and landed us at our destination and taxied the plane all the way out in the middle of the tarmac. SWAT showed up and surrounded the plane and searched all the undercarriage bags and one by one search us as they de boarded us. Then they put us on a bus and released us at the airport.