At the high point of a soaring career in the US Army, Lt. Col. Mark Weber was tapped by General David Petraeus to serve in a high profile job within the Afghan Parliament as a military advisor. Within weeks a routine physical revealed stage IV intestinal cancer in the thirty-eight-year-old father of three. When Mark realized he was not going to survive this final tour of combat, he began to write a letter to his boys, so that as they grew up without him, they would know what his life-and-death story had taught him. This book is that letter.