"Trevor Jones"

(Ever seen a cartridge case that had it's markings laser etched around
the primer pocket? Featured prominently in one of the few episodes I
watched all the way through.)

It's deliberate; they obviously can't give away all of the techniques used
by actual forensics scientists, so they blend enough reality with fiction to
fool the overwhelming majority of their viewing audience (and/or those
willing to suspend their disbelief for the purpose of being entertained. )

Myself, I can't stand the show (CSI); it's like watching an hour's worth of
ten second soundbites and flashy post-production tricks.

Jon