Alexander served ten years in the Biomedical Science Corps of the United States Air Force. Besides working with AFMS, DHS, EPA, NRC, and CDC standards and research, he established best practices adopted Air Force-wide. He produced Chemical, Biological, Radiological, and Nuclear (CBRN) response plans, trained base personnel and medical staff on response functions, inspected medical organizations across the United States, and advised Air Force leadership on toxicological impacts. His book, The Prophet Who Teacheth Lies, has helped many recognize the Lord's pattern for remaining faithful through times of injustice and persecution. His service in the Church has been wide and varied, including teaching Primary, Seminary, Gospel Doctrine, and Gospel Principles; president of Deacons, Teachers, and Elder’s Quorums; Stake Young Men’s Presidency, High Priest Group Leader, multiple Bishoprics, Branch President, and Missionary.