The process of winning the ground from the enemy so that a great base for future operations might be built, developing it as a harbor, constructing the base facilities, and using it as a base, all had to go on simultaneously at Guam. Bottlenecked, as always, was cargo handling in a very limited docking area. The rains came and went many times a day. Traffic sank into the muck, units dropped out to be hauled out later. Huge cats pulling loads of coral kept the causeways going. And the air hung with moisture and sweat.