The C-17 returns in Call of Duty: Warzone 2.0. It is the plane players jump out of during the beginning of a match and when the Loadout Drop events start.
In Call of Duty: Modern Warfare III, the C-17 appears in the Zombies mode by the beginning of the Escort contract, where C-17 operated by Hammer 2 delivers the Aether Containment Vehicle (ACV) to the Zaravan exclusion zone for the Deadbolt Strike Team to activate and protect.