John Herlosky has worked for two large metropolitan police departments as a police officer and academy instructor, has been trained in SWAT tactics, and is a designated marksman. He is considered an expert in the field of human performance technologies and has spent half his life in the martial arts. He was the codirector and cofounder of the nonprofit think tank, the Institute for Evolutionary Technologies, as well as the codirector of Project Trojan Warrior II, a mind-body integration training program.