Morley Safer was no friend of Dan Rather when the two worked together on CBS’ "60 Minutes,” according to a new unauthorized bio of Rather. In the book "Lone Star” – due out in September – author Alan Weisman writes that Safer "has not been a friend of Rather’s for years, since their days in Vietnam.” The animosity dates back to when Rather replaced Safer soon after Safer’s report about a platoon of Marines burning a Vietnamese village. "When Rather replaced me . . . he went to a group of Marines and said, ‘If I were you guys, I...