On Jan. 28, 1986, space shuttle Challenger exploded 73 seconds after liftoff from Cape Canaveral, killing all seven crew members.

Crew: (front row) Michael J. Smith, Dick Scobee, Ronald McNair;
(back row) Ellison Onizuka, Christa McAuliffe, Gregory Jarvis, Judith Resnik

I was walking through the TV room in the Powell Student Building at Eastern Kentucky University when this tragedy occurred.