Mark Henry is the pseudonym of national bestselling author Marc Cameron, author of National Security and Field of Fire.. A retired Deputy U.S. Marshal, Cameron spent nearly thirty years in law enforcement. His assignments have taken him from Alaska to Manhattan, Canada to Mexico, and dozens of points in between. He holds a second degree black belt in Ju Jitsu and is a certified scuba diver and man-tracker. Cameron lives in Alaska with his wife, blue heeler dog, and BMW GS motorcycle.