What is Yours is Also Mine

What is Yours is Also Mine is a Halo 4 achievement added with the Castle Map Pack. It is awarded when the player, in Castle DLC matchmaking, disables a vehicle and then hijacks it. It is represented by the Hijack sign surrounded by lightning bolts from the EMP Assist medal.

Trivia
The requirement for What is Yours is Also Mine is very similar to the Halo 3: ODST achievement Stunning!