Guest Stars David Nykl as Dr. Radek Zelenka Mitch Pileggi as Col. Steven Caldwell Gary Jones as Sgt. Walter Harriman Bill Dow as Dr. Bill Lee Ben Cotton as Dr. Kavanagh Beau Bridges as Major General Hank Landry Jaime Ray Newman as Lt. Laura Cadman Ellie Harvie as Dr. Lindsey Novak Brenda McDonald as Charin Peter Flemming as Agent Malcolm Barrett