Editor's note: This week marks the seventh anniversary of the downing of TWA Flight 800. Author Jack Cashill, whose book with James Sanders, "First Strike," presents a compelling case for terrorist involvement in the tragedy, today presents an index of facts surrounding the event and its aftermath. © 2003 WorldNetDaily.com 7 Come July 17, the number of years this crime has gone unsolved. 270 The number of eyewitnesses that the FBI admitted saw what appeared to be ascending streaks of light. 34 The number of eyewitnesses interviewed by analysts from the Defense Intelligence Agency's Missile and Space Intelligence Center whose...