"Man," replies Keltham, likewise sitting.
Most people that old in dath ilan, if they're getting to the point where they have to wear power armor to walk around - Keltham's brain has assumed automatically that's what this is since there's no other evident logical reason for it - are having health problems to the point where their life is sad and not that great and they're heading off into the cold already, to wait for a Future with more cheerful days. Later he should try to figure out if this is a Conspiracy update somehow.