my three sons. the father and the unbelievable milestone. who is our person of the week? good evening and it's great to have you with us on a friday night. we begin with michael flynn and his guilty plea. president trump's former national security adviser admitting he lied to the fbi. arriving with his wife at federal court in washington already processed and fingerprinted as part of his plea. with the deal, flynn is now agreeing to cooperate with the special counsel. could that mean flynn will testify against the president? we begin with brian ross. >> reporter: he was one of the president's closest advisers, one of his first major appointments, but today as general michael flynn walked out of court in washington, protesters chanted, lock him up. >> lock him up. >> reporter: an echo of flynn's own words about hillary clinton. >> lock her up. >> reporter: flynn pleaded guilty today to lying to the fbi, telling associates he is