Main Characters Captain Harmon "Harm" Rabb Jr., USN 227 main appearances Captain Bud J. Roberts Jr., USN 96 main appearances Lieutenant Colonel Sarah "Mac" MacKenzie, USMC 99 main appearances Rear Admiral A.J. Chegwidden, USN 86 main appearances Lieutenant Harriet Sims-Roberts, USN 50 main appearances Yeoman First Class (YN1) Jason Tiner, USN 49 main appearances Lieutenant Commander Mic Brumby, CSC, RAN 40 main appearances Gunnery Sergeant Victor Galindez, USMC 37 main appearances Lieutenant Loren Singer, USN 19 main appearances Special Agent Clayton Webb 15 main appearances Commander Peter Ulysses "Sturgis" Turner, USN 20 main appearances Lieutenant, Junior Grade Megan "Meg" Austin, USN 20 main appearances Legalman First Class (LN1) Jennifer "Jen" Coates, USN 10 main appearances Midshipman Third Class Michael "Mikey" Roberts, USNA 3 main appearances Rear Admiral Thomas "CAG" Boone, USN 3 main appearances Major General Gordon "Biff" Cresswell, USMC 4 main appearances Commander Caitlin "Kate" Pike, USN 2 main appearances Lieutenant Gregory Vukovic, USN 2 main appearances
Recurring Guest Characters ZNN Anchor 1 guest appearances Billie 1 guest appearances ZNN Reporter 1 guest appearances Postal Driver 1 guest appearances FBI Agent 1 guest appearances SGT Garret 1 guest appearances Agent Ito 1 guest appearances Public Official 1 guest appearances ZNN Cameraman 1 guest appearances Navy Attache 1 guest appearances Clerk 1 guest appearances Kent 1 guest appearances Denny 1 guest appearances Angel Munoz 1 guest appearances Mechanic 1 guest appearances Lee 1 guest appearances Kent's Brother 1 guest appearances Guard 1 guest appearances CPO Fred Holst 1 guest appearances Liz Holst 1 guest appearances ⇤ « 4 5 6 7 8 9 10 11 12 13 » ⇥