The exploration of space is a dangerous endeavour. The worst tragedy would be if this stopped us from moving forward. I believe it is time to begin the next generation of spacecraft, and phase out the current fleet. I still have a Challenger patch on my blue jean jacket. We're supposed to visit NASA in Houston in a couple of weeks. If I can, I'll probably pick up another patch from the Columbia. These people deserve honor and respect, but the exploration of space must continue. When mankind quits exploring, it will die.