aside from the "catch fire and explode" error, the author is constantly confusing the foam insulation on the external tank with the ceramic heat-shield tiles on the orbiter.
while it is true that Challenger was lost and Discovery is in peril due to Greenie interference, it helps NO ONE to so badly misrepresent the facts.
crap... COLUMBIA was destroyed on re-entry in 2003.
Challenger was the O-ring burnthrough on launch.
need... more... coffee