Television: Iron Chancellor

NBC has been trying to pick up the pieces of its nightly network newscast ever since Chet Huntley retired to Montana a year ago. What he and David Brinkley provided was a happy accident, a memorable blend of sonorous seriousness and acid wit. In their early ratings and in their personal chemistry, they were a hard act to follow. So hard, in fact, that last week NBC abandoned the plural approach to the evening news. For the first time in 15 years, it will go with a single anchor man. In mid-August, veteran Newsman...