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 Oceanic Airline Pilot Captain Bill Amstead 1 guest appearances Army General Zachary Wolfe 1 guest appearances Lee Kun-Tae 1 guest appearances Kwan Kun-An 1 guest appearances Mickey Callo 1 guest appearances Kin Ku 1 guest appearances Young-Hee 1 guest appearances Ann Sheehy 1 guest appearances LT Zane Lubin 1 guest appearances Commander Dooley 1 guest appearances Mark Borini 1 guest appearances CATOC Officer 1 guest appearances "Zapper" Luce 1 guest appearances "Buster" Williams 1 guest appearances Pr-Fly Talker 1 guest appearances Seaman 1 guest appearances Presidential Aide 1 guest appearances Female Aide 1 guest appearances Luigi 1 guest appearances Antonio 1 guest appearances ⇤ « 2 3 4 5 6 7 8 9 10 11 » ⇥