Don Challenger is a retired chemical engineer, physics and chemistry teacher, and custom home building contractor. He served as an officer in the U.S. Marine Corps upon graduation from college. He earned his Bachelor of Science in chemical engineering at Lamar University in Beaumont, Texas, and his Master of Arts in education at Azusa Pacific University in Azusa, California. He and his wife Nancy have extensively scuba dived in their travels around the world. He is presently continuing his research in oceanography and geophysics.