- Flynn sets record with only 24 days as national security adviser. The average tenure is about 2.6 years. - The Washington Post https://www.washingtonpost.com/news/morning-mix/wp/2017/02/14/flynn-sets-record-with-only-24-days-as-nsc-chief-the-average-tenure-is-about-2-6-years/?utm_term=.f616907dc0c3 158 comments politics