What-If Politics of Flight 93 By John Armor This much we know: United Flight 93 was hijacked on Sept. 11, 2001. Terrorists flying the plane turned it back toward Washington to use it as a flying bomb against the U.S. Capitol, where Congress was in session. By then, the terrorists probably had cut the throats of the flight crew. Using cell phones, the passengers discovered that two other hijacked planes had been flown into the World Trade Center twin towers. The passengers realized their plane was intended for a similar fate; they and many others would die if they did...