September 17: Battle over Covid booster shots. U.S. Capitol police on alert. New developments in the search for Gabby Petito. Jeopardy! announces split hosting duties.

<p>FDA advisory panel is meeting today to discuss Pfizer booster shots as battle over vaccine mandates and boosters continue — Savannah Guthrie goes one-on-one with former CDC acting director Dr. Richard Besser. Plus, U.S. Capitol police is on high alert ahead of tomorrow’s planned rally in support of the January 6th insurrection. Also ahead, the search continues for 22-year-old Gabby Petito — Utah authorities release new body cam footage showing incident between her and her fiancé. And, Jeopardy! announces split hosting duties between Mayim Bialik and Ken Jennings for the remainder of the year following Mike Richards’ exit.</p>