the basic theoretical grounding in physics, physiology and medicine that are relevant to their work as a diver. The skills required for routine diving operations, including working as part of the diving team, planning of diving operations, and diving in open water, exposed to the normal hazards of the diving environment, decompression procedures, serving as attendant to another diver, communications and the safe use of the tools appropriate to the work. The skills in emergency procedures for management of reasonably foreseeable emergencies, including standby diver skills for diver assistance and rescue, management of emergencies unaided where appropriate, and team procedures for handling emergencies. Preparation of diving and task-related equipment for use Provision of first aid and basic life support procedures in a diving emergency, and assistance, under supervision, in the treatment of diving disorders Competence to assist under supervision with chamber operations, including acting as inside attendant to an afflicted diver. International Diving Schools Association (IDSA) provides a Table of Equivalence of various national commercial diver training standards. Military scuba training is usually provided by the armed force's internal diver training facilities, to their specific requirements and standards, and generally involves basic scuba training, specific training related to the equipment used by the unit, and associated skills related to the particular unit. The general scope of requirements is generally similar to that for commercial divers, though standards of fitness and assessment may differ considerably. Records The current (2017) scuba depth record is held by Ahmed Gabr of Egypt who reached a depth of in the Red Sea in 2014, however this record is under investigation due to evidence presented in 2020 suggesting it was faked. In which case the record would revert to 318m set by Nuno Gomes in 2005. The record for cave penetration (horizontal distance from a known free surface) is held by Jon Bernot and Charlie Roberson of Gainesville, Florida, with a distance of . Jarrod Jablonski and Casey McKinlay completed a traverse from Turner Sink to Wakulla Springs, on 15 December 2007, covering a distance of nearly . This traverse took approximately 7 hours, followed by 14 hours of decompression, and set the record as the longest cave diving traverse. The current record for the longest continuous submergence using SCUBA gear was set by Mike Stevens of Birmingham, England at the National Exhibition Centre, Birmingham, during the annual National Boat, Caravan and Leisure Show between 14