These standards include "Commercial SCUBA Diver". An example of a widely accepted training standard – EDTC 2017 "Commercial SCUBA Diver" – requires the professional scuba diver to be certified as medically fit to dive, and competent in skills covering the scope of:  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. The current (2017) scuba depth record is held by Ahmed Gabr of Egypt who reached a depth of in the Red Sea in 2014. 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 February 14 and February 23, 1986. He was continuously submerged for 212.5 hours. The record was ratified by the "Guinness Book of Records".