"Earlier in the week, an advisory panel concluded that NASA failed to meet three of the 15 safety recommendations issued by the Columbia accident investigators in 2003. Despite many improvements, the shuttle is still vulnerable to pieces of foam or ice falling off the external fuel at liftoff, and the astronauts still have no reliable way of fixing damage to their ship's thermal shielding once in orbit, the group said.
"But Griffin and others at NASA believe those risks have been reduced to an acceptable level."
Fuck "acceptable." I think astronauts should strike -- simply refuse to consider going into space until we have a launch vehicle that's up to technological standards of at least, say, the mid-1980s.