Four local gun-rights advocates filed a suit against D.C. saying Metro’s ban on concealed handguns on public transportation is unlawful. That lawsuit comes a 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 about the nature of the killing.