Main Characters Cmdr. Ed Straker 2 main appearances Col. Alec E. Freeman 2 main appearances Lt. Gay Ellis 2 main appearances Col. Paul Foster 1 main appearances Col. Virginia Lake 1 main appearances Joan Harrington 1 main appearances Capt. Peter Carlin 1 main appearances Nina Barry 1 main appearances Gen. James Henderson Dr. Doug Jackson Lt. Mark Bradley
Recurring Guest Characters Dr. Ward / Dr. Brünner 1 guest appearances Russian Base Cmdr. 1 guest appearances Jim Regan 1 guest appearances