After a battle leaves Spitfire (and pilots) near ruin, Wally and Artemis begin recovering from their injuries while a crew tries to salvage what’s left of the jaeger. Five years pass before Spitfire is completely fixed and ready for battle. Kaiju attacks have increased and higher categories started appearing. Wally and Artemis used Baywatch, a Mark 3 jaeger, while waiting on the repairs of Spitfire.
(But honestly this was just about drawing Spitfire fluff.)