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JAG is a military drama about lawyers serving in the Navy's Judge Advocate General Corp that debuted on September 23, 1995 on NBC. JAG starred David James Elliott as Lt. Harmon Rabb and Andrea Parker as his partner, Lt. (j.g.) Caitlin Pike. In the next episode Lt. Pike was  replaced with Lt. ( j.g.) Meg Austin, played by Tracey Needham. Half way through the season, supporting characters were added in the form of Admiral A.J. Chegwidden, played by John M.
Jackson, and Commander Allison Krennick, played by Andrea Thompson.
At the end of the1995-1996 television season NBC canceled JAG. In the scramble for other networks to pick up the show, CBS came out on top. CBS added JAG to its mid-season schedule. In January 1997 as JAG began it's second season, gone were Lt. Austin and Commander Krennick. Added were Maj. Sarah MacKenzie, played by Catherine Bell, and Lt. ( j. g.) Bud Roberts, played by Patrick Labyorteaux. JAG has been renewed for a fourth season and will still air on Tuesday at 8:00 p.m. (EST).