Irvin Hornkohl longed for adventure. After joining the Navy, his life changed forever on December 7, 1941 at Pearl Harbor. Surviving Pearl Harbor was just the beginning. Irvin’s stories of adventure and survival during thirty years in the Navy include eleven wartime submarine patrols, two tours in Vietnam, and stints at American embassies behind the Iron Curtain and in war-torn Cambodia. Along the way, he was a merchant seaman, a uranium prospector, a pilot, a marathon runner, an airplane mechanic, a builder, and a rancher. He created his own bold life and survived it all. At age 88, Irvin, along with author Mary Penner, shares his captivating life story. Just Do It, Crazy or Not is an inspiring story of an ordinary man leading an extraordinary life.