Jamieson was a frequent substitute news anchor on Today throughout the 1980s, filled in as anchor on NBC Nightly News, and served as the anchor of NBC News at Sunrise from 1986 to January 1987.
Jamieson often covered for the main news anchor on Today throughout the 1980s, took over as the lead anchor on NBC Nightly News, and headed the morning show NBC News at Sunrise from 1986 to January 1987.