On a cruise to Alaska, we came across this tug pulling two barges, filled with supplies and such, going to Alaska. From a distance, it looks like two ordinary barges filled with large containers. But when I put my zoom on my camera, to my surprise, on top of all of the containers, there was a garbage truck, a cement truck, a bulldozer, and various other items that did not fit in the typical containers. Never did I expect to see a cement truck, garbage truck or bulldozer on top the this pile