Tenacity. Grit. Endurance. Courage. Persistence. These traits are the hallmarks of the lives and characters of Alan Stern and Scott Kelly. Of course, both men worked with entourages of brilliant scientists and engineers without whom they would not have achieved the goals they set for themselves. Both men had to overcome many obstacles and setbacks over a period of decades. But in the end, they both achieved their lifetime goals. Scott Kelly became an astronaut and Alan Stern helped build and send into space the New Horizon Pluto Explorer. These two men and their collaborators deserve our highest regards. I will never forget these two amazing men.