Quicksand reference...

[jagfiles]

On a NCIS episode tonight a group of people were in a decompression chamber when one dropped dead while in the chamber.
When a couple of NCIS agents showed up with the M.E. they were told it'd be several days before the chamber could be safely opened. When one of the agents asked the M.E. his inital thought he passingly commented "Well I can safely rule out quicksand."