I agree with Kntx. I would circle strafe him after the headshot though, then I would bunny hop on his dead corpse for a while before popping a smoke grenade and disappearing.
Actually, I would tackle his ass down to the ground, put him in a double chicken wing and wait for my fiance to get my handcuffs off my duty belt. Then I would cuff his right hand to his left ankle and rough him up for a while, while I waited on the feds to come get him so I could claim my millions.