An unthinkable event happened to the United States of America and its citizens on September 11, 2001. Terrorists hijacked four passenger jet airliners, each carrying tanks full of fuel and large numbers of passengers, enroute to destinations in western United States. The hijackers commandeered the planes and deliberately flew three of the planes to points where destruction was achieved: the World Trade Center in New York City and the Pentagon in Arlington, Virginia, next to Washington, D.C., the nation’s capital. The fourth plane crashed in a field near Shanksville, Pennsylvania, just north of Camp David, the Presidential Retreat in Maryland. Efforts by the hijackers to cause additional destruction was thwarted by the heroic passengers of the airliner.
