Claim: Ted Koppel spent 20 years as a broadcast journalist and news anchor for ABC before becoming a host for Nightline which he anchored for another 25 years.
Evidence: Before Nightline, he spent twenty years as a broadcast journalist and news anchor for ABC. In March 1980, the program evolved into Nightline, with Koppel as its host. Koppel spent twenty-five years anchoring the program, before leaving ABC (and leaving as host of Nightline) in late November 2005.