Four local gun-rights advocates filed a suit against D.C. saying the Metro’s ban on concealed handguns on public transportation is unlawful. That lawsuit comes one week after the U.S. the Supreme Court upheld the right to carry a gun outside of the home. WTOP’s Valerie Bonk , who has a law degree, breaks down the suit and tells us what’s at stake. And we are learning more about a horrific murder of a father and non-profit CEO in Northern Virginia. WTOP’s Neal Augenstein has the charging documents and tells us the nature of the killing.