Book excerpt: Retired U.S. Air Force Captain Mark David Gibson makes his debut as an author with his memoir, Served in Silence. Join Mark as he takes you on his journey before, during, and after the military's Don't Ask, Don't Tell policy. Walk right alongside Mark as he shares his story of guilt, shame, and secrecy, and draw inspiration as you witness him create a new life grounded in love, authenticity, and purpose. Served in Silence speaks to the heart of anyone struggling to live authentically, and aims to inspire readers to be brave and live firmly in their truth.