Remember the rollout of the AAV survivability upgrade by SAIC? New flotation armor (I think) added to new blast seats, increased horsepower...it didn't go as far as I wanted but it was better than what we had.
What had me scratching my head was the appendage on the back of the thing. What was that? Then it hit me when I was looking at the photos. It wasn't venting for an auxiliary power unit...it was freaking racks for jerry cans!
I don't know whether I should be shocked that they would engineer such a solution to carry water or amazed. Whether you love it or hate it, its still quite interesting...oh and it should keep the water a bit cooler too!