Peter Brett Cullen is an American actor. He is best known for his roles as Dan Fixx in Falcon Crest (1986–1988), Sam Cain in The Young Riders (1989–1990), Governor Ray Sullivan in The West Wing (2005–2006), Goodwin Stanhope in Lost (2005–2008), Mark Keeler in Make It or Break It (2009–2012), Nathan Ingram in Person of Interest, and Michael Stappord in Devious Maids (2013–2015).

David Randolph Scott is an American retired test pilot and NASA astronaut who was the seventh person to walk on the Moon. Selected as part of the third group of astronauts in 1963, Scott flew to space three times and commanded Apollo 15, the fourth lunar landing; he is one of four surviving Moon walkers and the only living commander of a spacecraft that landed on the Moon.