TODAY 3rd Hour: Flu shots and kids. Powerful account from retired FDNY Chief on being the first to arrive on 9/11. Catching up with Rick Ross.

<p>The American Academy of Pediatrics has released its recommendation for kids to get the flu shot — NBC medical contributor Dr. Natalie Azar has the latest. Plus, the first fire chief to respond the morning of 9/11 is in-studio to share his powerful story with Craig Melvin, Dylan Dreyer, Al Roker and Sheinelle Jones. Plus, catching up with Rick Ross — the Grammy-nominated rapper is opening up about his new book “The Perfect Day to Boss Up: A Hustler’s Guide to Building Your Empire.”</p>