Phil Messina, author of “Warrior 101: A Handbook for the Modern Warrior,” is a highly decorated NYPD sergeant (Ret.), who has been teaching defensive tactics for over 30 years, has martial arts background of more than 50 years and is the developer of key training concepts that include goal oriented training, environmental stress inoculation, physio-kinetics, timeframing and vortexing. He is the founder and president of Modern Warrior Defensive Tactics Institute and a co-developer of the H.E.L.P. Expandable Baton System. He welcomes your comments at [email protected].