Rex is a United States Army veteran who served both as an enlisted and an officer. He achieved the enlisted rank of SSG and commissioned rank of 1Lt. He is currently employed as a commercial airline captain. Although having a lifelong interest in firearms and military training, he had a passing interest in firearms. However, as a pilot the events of September 11, 2001 gave him a heightened awareness of his responsibility as a citizen and the need for being prepared and trained in firearms that came with that responsibility. This led to his getting his own concealed carry permit and becoming a instructor.