"Life is great, but it's a bit short sometimes. I hope this trip has inspired you to fulfill your dreams. We humans have the capacity of turning dreams into reality far more than we think. Along the way, we can make the world a better place.... What is your dream? How will you make a difference? Don't wait too long!" (Bob Keegan, 2007)Bob Keegan lived life to its fullest. He made sure every minute mattered. As deputy directory of the Global Immunization...