CBS correspondent Lara Logan apologized on "60 Minutes" last Sunday for that program's deeply flawed account of how four Americans were killed at a diplomatic compound in Benghazi. It turned out their primary source, a government contractor named Dylan Davies, was never at the compound and lied repeatedly about the tragic episode.The program "had been misled" by Davies and "we are very sorry" about putting him on the air, Logan said. "The most important thing to every person at '60 Minutes' is the truth.