Brian Henen, ecologist, Natural Resources and Environmental Affairs, has been involved in conservation his entire life and studied various tortoise species for more than 20 years. Throughout his career, he has learned about the various species of tortoises and contributed to scientific tortoise literature when he survived a Desert Tortoise attack. (Official Marine Corps photo by Lance Cpl. Levi Schultz/Released) - Brian Henen, ecologist, Natural Resources and Environmental Affairs, has been involved in conservation his entire life and studied various tortoise species for more than 20 years. Throughout his career, he has learned about the various species of tortoises and contributed to scientific tortoise literature when he survived a Desert Tortoise attack. (Official Marine Corps photo by Lance Cpl. Levi Schultz/Released)