During the last half of season 8, Catherine Bell was shown mostly behind a desk or holding something in front of her because she was pregnant. Her character pretended to be pregnant during the last couple of episodes of the 8th season, then threw away the padding during the Season 9 premiere - because Bell had given birth during the summer hiatus.
The location for Admiral Chegwidden's house is the Peter Strauss Ranch, operated by the National Park Service in the beautiful Santa Monica Mountains National Recreation Area in Southern California once owned by actor Peter Strauss.
During Tracey Needham's time on the show, when wearing her ribbons, she was shown as wearing only the Meritorious Unit Commendation. She should also have been wearing the National Defense Medal which had been authorized for all service personnel serving during the period 2 Aug 1990 to 30 Nov 1995. Tracey Needham first appeared as Lt(jg) Meg Austin on 30 Sept 1995.
"JAG" stands for "Judge Advocate General". The office of JAG is a part of the Navy, which according to their official website "provides legal and policy advice to the Secretary of the Navy in all legal matters concerning military justice, administrative law, environmental law, ethics, claims, admiralty, operational and international law, litigation and legal assistance."
During its first season, the series was co-produced by NBC in addition to Belisarius and Paramount. NBC obviously did not continue co-producing after the series moved to CBS, and CBS did not take over as a co-producer for NBC either. Though, such a move was made unnecessary by the 2000 merger of CBS and Paramount's parent Viacom. CBS and Viacom split again in 2006, and Paramount's TV library, including "JAG", was retained by CBS.
Lead actor, David James Elliott, who plays the character of Harmon Rabb Jr. whom the series was based on, appears in every single episode of JAG either as himself, or as another character in a flashback or via voice by phone. He is the only regular recurring cast member to appear on film in all episodes from seasons 1-10.
When the series began Sarah MacKenzie (Catherine Bell) was a Major in the Marines. Shortly thereafter she was promoted to Lieutenant Colonel at which rank she retained until the series ended. In the last episode she was being transferred to San Diego.
Early in the series, before the opening credits, a commentary was given explaining that Rabb was originally an F-14 Tomcat pilot, and crashed during heavy seas, and after being diagnosed with night blindness, he joined JAG.