!%The Laser Institute of America%! has released the 2009 version of its DVD Mastering Light – An Introduction to Laser Safety and Hazards. The upgraded resource is designed for laser safety officers who are responsible for training new employees and keeping their teams updated on current safety issues and practices. With a playing time of about 20 minutes, it fulfills the ANSI Z136.1 Safe Use of Lasers and the Occupational Safety and Health Administration’s training requirements for employees working with or around Class 3B or 4 lasers and laser systems.