National Fire Protection Association (NFPA) standards are used every day to protect people and buildings around the world. But have you ever asked how the NFPA got started? Why and how the standards were developed or how the numbering system was devised? How were sprinklers invented? Rodger and Russ Fleming, retired President of the National Fire Sprinkler Association and retired Managing Director of the International Fire Sprinkler Association, explore the answers to these questions - and explain how sprinklers and Isaac Newton are linked.