Visitors from the Breezewood Senior Center, Breezewood, Pa., overlook the temporary memorial in Shanksville, Pa. Thursday morning. Today’s ceremony at the Flight 93 crash site will honor the 40 victims of Flight 93, which crashed on Sept. 11, 2001. It will begin today at 9:45 a.m. next to the memorial. Retired Army Gen. Colin Powell will deliver the keynote remarks. Other speakers include former governor and U.S. Homeland Security Secretary Tom Ridge and retired Army Gen. Tommy Franks.