- "Oh, you're right about that."
- ―Baker to the Church Custodian before killing him.
Baker was one of Colonel Stuart's mercenaries and former members of his unit who helped in a plot to take over the systems of Dulles International Airport's control tower systems to break out General Ramon Esperanza.
Baker and his fellow comrade Thompson, who disguised themselves as airport maintenance workers, arrived at Hidey Lake Community Church near the airport and had the church's custodian let them inside so they can check out their equipment. As the custodian admits he feels at the lost with that the church is on the verge of being closed, Baker lets out an appropriate response and kills the custodian. Then he and Thompson had cleared the church to make space for the airport's makeshift control room so they can hack Dulles airport's control tower.
Baker was present at the door of the church when Miller returns alone and learns from him that Oswald Cochrane didn't make it, which seemingly upsets Baker when he mutters, "Aw man".
Later that night, he was patrolling the church when John McClane and Dulles chief engineer Leslie Barnes found the church. Then Baker hears McClane's beeper go off and attacks him. Though Baker proved to be powerful in physical strength during the struggle, McClane was able to grab a nearby icicle near the church's detached garage, and stab it through Baker's left eye and into his brain, killing him almost instantly. He was the sixth man in Stuart's group to be killed by McClane, and the seventh mercenary lost in the operation.