Attica is a New York prison which had a large prison riot at the time. “Rocky” is then-Governor Nelson Rockefeller who squashed the riot with armed force, resulting in many deaths.
Roger Mudd was a correspondent for CBS news. Around this time he rumored to be succeeding Walter Cronkite as head anchor, but Dan Rather got the job instead. Mudd may be cranky because of that.
What is with George’s ridiculously tall helmet.