That means they essentially had 2 Airstream campers, welded together, that the 4-Star hung out in. That thing has been around for a LONG time. We called it the Silver Bullet and I was on several missions to South Korea (Kunsan I believe) back in the 90s doing the same exact thing. Sometimes we went to DC and others MacDill. Most of the time it was a double AR to the West Coast, quick refuel, and on to destination. Yeah that is a LONG mission. I am guessing the aircrew was 4 pilots, 2 loads, and a few Mx personnel because Barney breaks like Fred. There was always a TON of support peeps for the bullet on board -From techs to waiters.
The inside is badass! We used to sit in it on the empty legs and watch movies. Back in the 90s, it had the coolest home theater I had ever seen. I remember being so enthralled in watching Apocalypse Now, that I did my pre-landing walkaround and ran back inside to keep watching the movie. Just as we touched down, the first BOOM of the beach scene went off. It was awesome!
Here is a link to the bullet:
http://cryptome.org/eyeball/c17-swank/c17-swank.htm