singing] ♪ in another village, navy rpmen help the people fight against sickness. ♪ >> teaching the fundamentalsor too long have reflected only fear and despair. >> we was out in the village below us here, giving out christmas things that people from the states sent over, and we want to let everyone know reallyme that the kids need a lot, and believe me, they really enjoy everything they get. ♪ >> historian and author william davis talks about the different upbringings of grant and lee, and how their childhoods impacted their lives. argues that grants optimistic worldview were brought about the freedom and responsibility he was given by his father. in contrast, mr. davis suggest