The Iranian threat, of course, is real, but its immediacy gets turned on and off by the Prime Minister like a faucet. In this tube the coals were placed, and when the water in the urn was hot, it could be drawn off by means of a faucet at the side. The drip-drip of water from the faucet sounded loud in the quiet.
After multiple dives per day or multiple days of diving, a minimum surface interval of 18 hours is recommended. If you had to do a decompression stop during a dive, the recommended time to wait before flying is a bit more of a gray area.
The U.S. Navy tables recommend that you wait at least two hours before you board a plane after scuba diving; the U.S. Air Force says you should wait 24 hours; DAN recommends a 12-hour minimum surface interval before flying; PADI Flying After Diving guidelines say that you should not go to an altitude (fly) within 12 hours of completing a single dive ...