In Duty is Ours, Results are God's, Captain Randall "Ran" Jansen tells of his tough and demanding, yet adventurous and exciting nine years in the US Marine Corps. He discusses principles to follow and life lessons to be learned, along with interesting and sometimes funny stories. Jansen began as a private in boot camp and later earned his officer's commission through attending flight school at the Naval Air Station in Pensacola, Florida. Graduation was followed by his worldwide service in the Caribbean Sea, the Mediterranean Sea, and Vietnam. He was seriously wounded on his 248th combat flight mission during the Vietnam War, the resulting disability of which led to his mandatory retirement from the Marine Corps at the rank of Captain. Following his career in the Marine Corps, he transitioned back to civilian life and began an extended investigation into some critical and perplexing questions. Why would one voluntarily serve or commit to duty that could result in serious injury or death? Is service worth it? Where do we get the concepts of freedom, liberty, purpose, or meaning? Is there absolute truth, or is everything relative? Is there a correct, reasonable, or logical worldview by which one should live? If there is, how does one find it and then live it?