From my Friend J. Speicher on his Google+ today and originally from "Space Shuttle Challenger" (Google+ also):
The NASA family lost seven of its own on the morning of January 28, 1986, when a booster engine failed, causing the Shuttle Challenger to break apart just 73 seconds after launch.
The crew of STS-51-L: Front row from left, Mike Smith, Dick Scobee, Ron McNair. Back row from left, Ellison Onizuka, Christa McAuliffe, Greg Jarvis, Judith Resnik.
Image credit: NASA
Space Shuttle Challenger (NASA Orbiter Vehicle Designation: OV-099) was NASA's second Space Shuttle orbiter to be put into service,Columbia having been the first.
I don't know if you remember this tragic event, but I was at home that day and saw it live on TV. Traumatic doesn't begin to explain. Remember and say a prayer for the brave souls lost that day.