If space shuttle is doomed, do you tell the crew?

If space shuttle is doomed, do you tell the crew?

NASA has twice had space shuttles that disintegrated .... one going up and one coming down...  both times, some members of NASA believed there was a problem before the disaster occurred.  Should the crew be told about these concerns ?

If your answer is NO.... then I think your are a moral monster.  Ever thinking creature should always be told the truth... all the truth as it is best understood at the time.  At least they should be asked.....* do you want to hear the bad news ? *

99guspuppet