In a great drama I love called Law And Order The DA (District Attorney) Is in charge and he was played by Steven Hill in 1990-2000 and he was 68 in first episode and 78 in his last, he was in it 10 years, it is established that he had been DA for several years before his first appearance, is that realistic? I mean is it possible for a DA to last that long?i mean it is hinted he was DA for 30 years? because in an episode it is hinted that he was a DA in the 1970s which is 20 years before the program is set is a DA in their late 60s to late 70s believable? I mean the actor was born in 1922 and he was in the show 1990-2000 the 2nd in command who does all the courtroom scenes Michael Moriarty was the Executive ADA he was in his 50s