In what year did Leroy Sievers begin serving as the executive producer "Nightline"?
Leroy Sievers:  He was a commentator for National Public Radio, served as a bureau chief for CBS news, served as an executive producer for the ABC program "Nightline", and covered a variety of global conflicts as a war correspondent. Ted Koppel: Edward James Martin "Ted" Koppel (born February 8, 1940) is a British-born American broadcast journalist, best known as the anchor for "Nightline", from the program's inception in 1980 until 2005.
1980