Photo of the Day: Where can I buy a key chain for this?

From US Embassy Pakistan via Flickr:

NAS Vehicle Handover

This is supposedly a handover; can't say from looking at the photo who's giving what to whom. He's holding the gigantic key with two hands, maybe he is giving it to her? And she seems happy to receive the key with one hand, or is she giving it to him?  What vehicle has a key as huge as that?  We're still thinking what this means but we'd like to know where one can buy a key chain for this.

Simple lesson here - if you bother to take a picture, and bother to upload it online, please bother to put some caption.