Accounting Information Systems: Essential Concepts and Applications Fourth Edition by Wilkinson, Cerullo, Raval, and Wong-On-Wing Chapter 12: The Revenue Cycle Introduction Revenue Cycles tend to be similar for all types of firms.
When diving from a boat, a dive team need not carry its own dive flag provided that it stays within a predefined proximity of the dive boat. When shore diving at sites where watercraft traffic is a possibility, divers should float their own dive flag on the surface, and stay within a few hundred feet of the flag.
With helium in the mix, divers can theoretically go down to about 300 meters (1000 feet). That's a dicey proposition, because even with exotic gases, you have to decompress for hours after a dive at that depth.