Should folks wish to pause on their hikes to the summits, some appropriate times are:
8:46am – American Flight 11 hits Tower 1
9:03am – United Flight 75 hits Tower 2
9:37am – American Flight 77 hits the Pentagon
9:59am – Tower 2 collapses
10:03am – United Flight 93 crashes
10:26am – Tower 1 collapses
