You have the personnel, who speak different languages, and of variable ability.
There are tasks to accomplish such as laying supply lines, placing cylinders, finding the boys, accompanying lesser trained divers.
There are supplies to manage, food, water, equipment.
I suppose armed forces specialize in planning these types of operations. Most other project managers have more of a luxury of time. I just am amazed about how they put this together. I hope they put together a report afterwards, because people need to learn an awful lot from this.