Life Lesson #9: Since the beginning of life as we know it, death has always been a matter of when, not if.
My respect and admiration goes to the crew of the COLUMBIA;
my sympathies go out to their families.
In my opinion, truly engaging scientific observation and discovery has always been worth risking life and limb,
but the human beings who *actually* face those risks *of their own free will and volition* are heroes.