Brandish a gunâIn England, bank robbers who threatened employees and customers with a gun stole, on average, about $16,000 more than robbers who were unarmed. Of course, showing off a gun raises the risks as wellâarmed robbery almost always comes with a minimum jail sentence and makes things more dangerous.
Dive Support Vessels.  Dive support vessels or diving support vessels are ships used in professional diving projects as a floating base. Diving systems are considered can compete for valuable deck space in oil and gas production platforms. It is far more practical to use mobile floating dive support vessels.
Diving cylinder. A diving cylinder, scuba tank or diving tank is a gas cylinder used to store and transport the high pressure breathing gas required by a scuba set. It may also be used for surface-supplied diving or as decompression gas or an emergency gas supply for surface supplied diving or scuba. Cylinders provide gas to the diver through the demand valve of a diving regulator or the breathing loop of a diving rebreather. Diving cylinders are usually manufactured from aluminium or steel alloys, and are norma