Cast The final ensemble cast centers on Captain PERSON@1 `` Harm '' Rabb , Jr. , USN -LRB- PERSON@2 -RRB- , and Lieutenant Colonel PERSON@3 `` Mac '' MacKenzie , USMC -LRB- PERSON@4 -RRB- .

The series is about the JAG officers PERSON@1 `` Harm '' Rabb , Jr. -LRB- PERSON@2 -RRB- and PERSON@3 `` Mac '' PERSON@5 -LRB- PERSON@4 -RRB- .
