Since 2003, I have worked in the fire and rescue business doing service and sales. Department of Transportation standards as a hydro-testing service provider. Most work can be completed within one day while you are able to keep working atyour job. I've spent another 11 years working as a production manager in a motion control business, again working with customers on both production and service challenges. There are businesses that do this type of work, but they require you to get your cylinders to them a few at a time, since you will be without them for some period of time while they test them. The one stop is your fire department or business. Along with this DOT certification, we have completed training in: Cylinder Requalification Seminar. At Active Carolina Sports Spine we offer a comprehensive approach to injury management that allows our patients to keep doing what they love. I have performed service and repairs on rescue tools, air bags, and breathing-air compressors. I have worked most of my adult life in some type of service business, including 20 years in automotive, from tech to service manager.