[jon1856]

Originally Posted by Tom Earp

All are spin offs of NCI Vegas.

Naval Crime Scene Investigation= NCIS.

NO, NO and NO.
NCIS is a spin of from JAG.
It is from a different EP, creator and IIRC studio than CSI.
JAG: http://imdb.com/title/tt0112022/
http://imdb.com/title/tt0112022/trivia

NCIS: http://imdb.com/title/tt0364845/
http://imdb.com/title/tt0364845/trivia

CSI "family": http://imdb.com/find?s=all&q=csi
http://imdb.com/title/tt0247082/trivia
http://imdb.com/title/tt0313043/trivia
http://imdb.com/title/tt0395843/trivia

And for real differences between JAG and NCIS:
http://www.jag.navy.mil/

http://www.ncis.navy.mil/