CBS’ “Face the Nation” has chosen its first new executive producer in 18 years, with Mary Hager promoted to replace Carin Pratt.

Hager, a 20-year CBS News veteran, has been a senior producer of the Bob Schieffer-hosted news program for two years. She was also Schieffer’s producer for a 10-year period and has eight years past experience on the “CBS Evening News.”

“Mary has been a force at ‘Face the Nation,'” CBS News vice president and Washington bureau chief Christopher Isham said. “Her significant contributions have helped to strengthen the broadcast editorially and competitively. … She has a proven record of accomplishment as well as the ability, experience and vision to lead ‘Face the Nation.'”

Said Schieffer: “I remember once during the Clinton impeachment saga, Mary and I worked 57 straight days without a day off, and never once did I have to tell her, ‘We’re going to need you tomorrow.’ When there is news, she just shows up without being asked because she loves the news. That’s my kind of reporter, and that’s why she has been able to build such a long list of sources, contacts and key people inside Washington and throughout the political community.”

Pratt spent 27 years at CBS News, joining “Face the Nation” in 1984 as an associate producer and eventually becoming exec producer in 1993, two years after Schieffer took the hosting reins. She also served as a CBS News special events producer.

“Carin Pratt has been a full partner in ‘Face The Nation’ and my true friend for more than 20 years,” Schieffer said in a staff memo. “That’s a lot of Sundays to spend together, and she deserves more than half the credit for what we have achieved in all of those years. I’m going to miss her more than I can ever say.”