Main Characters John Loengard 20 main appearances Kimberly Sayers 19 main appearances Capt. Frank Bach 18 main appearances Lt. Commander Phil Albano 18 main appearances Jim Steele 12 main appearances Dr. Halligan 12 main appearances Juliet Stewart 8 main appearances
Recurring Guest Characters Jack Ruby 3 guest appearances Dr. Carl Hertzog 2 guest appearances Robert Goodwin 2 guest appearances Dr. Ron Burnside 2 guest appearances Etta Mae Tillman 2 guest appearances Monica Gresham 2 guest appearances Dr. Carl Sagan 2 guest appearances Robert Kennedy 2 guest appearances Major Friend 1 guest appearances Abducted Woman 1 guest appearances Barney Hill 1 guest appearances Mark Simonson 1 guest appearances Congressman Charles Pratt 1 guest appearances Betty Hill 1 guest appearances Popejoy 1 guest appearances Ground Control Worker 1 guest appearances Corporal 1 guest appearances Base Commander 1 guest appearances Clint Hill 1 guest appearances President Harry S. Truman 1 guest appearances ⇤ « 1 2 3 4 5 » ⇥