At each Chi Psi Convention, there is a Mark Bingham Memorial 5k. It honors the memory of Bingham, passenger onboard United Airlines flight 93 on September 11, 2001. He and three other passengers attempted to retake the plane from the hijackers which resulted in the plane crashing into a field near Shanksville, PA, thwarting the hijackers plan to crash the plane into a building in Washington D.C,