Please join us this coming Wednesday, May 5, when we will learn all about SCUBA cylinders and cylinder safety. This presentation is for all divers - renters of tanks, as well as owners. Come and increase your knowledge and be a safer, smarter diver!

NASA's Neutral Buoyancy Laboratory, located near the Johnson Space Center, Houston, Texas

About Mark Gresham

Mark Gresham is the current owner and CEO of Professional SCUBA Inspectors, Inc. He is widely regarded as the authority on cylinder safety and inspection around the world. He is an outstanding instructor for cylinder inspectors, eddy current technicians and SCUBA valve service personnel, and the head Instructor Trainer for PSC-PCI (Professional Cylinder Inspectors). Mark is an ongoing consultant to NASA's Neutral Buoyancy Laboratory, cylinder manufacturers and many other PSI-PCI inspectors and customers. He is a trained cylinder hydrostatic requalifier. Mark has over 30 years experience in highly skilled technical diving.