Major McCain is a USCM Major in the game Aliens v Predator 2.
Major McCain is in the second Dropship from the USS Verloc along with Harrison and Sergeant Hall, he mostly sets Harrison tasks and gives him logs detailing any missions.
Reference stats table.
Appearances in the following;
Aliens v Predator 2
The three story lines in Aliens versus Predator 2 intersect each other. The events of each storyline trigger events in the others.
Major McCain issues logs and commands for the different squads he sends out, he appears in the levels Unwanted Guests, Betrayal and Collateral Damage.