 It's 1015. I'm Rich Hunter. Thanks for being with us. The investigation continues into how a shooter outside the secured rally area got into a position to shoot at former President Donald Trump, killing one attendee in the process. The shooter, identified as 20-year-old Thomas Matthew Crooks of Bethel Park, Pennsylvania, was shot and killed by Secret Service snipers. And now we're learning more about security concerns here in the U.S. as a result of that shooting. WTOP National Security Correspondent J.J. Greene