Possible Clues:

• Special Agent Gibbs's beat
• Org. for forensic specialist Abby Sciuto
• CBS show with a 'New Orleans' spinoff
• Longtime TV procedural
• Mark Harmon military series
• Police procedural beginning in 2003
• Two-spinoff CBS series
• Longtime CBS police procedural
• CBS spinoff from 'JAG'
• CBS military law show