Five things to know Tuesday, March 15:

1. Five people were shot after an argument at Club Crucial led to gunfire overnight. [Lauren Foreman has the details]

2. An East Point house collapsed in fire overnight trapping three people believed to be inside the home. [Here is what we know now]

3. Facing an onslaught of challengers, U.S. Rep. Barry Loudermilk picked up an endorsement Tuesday from an influential tea party organization. [Greg Bluestein has more in the Political Insider blog]

4. Gov. Nathan Deal fires a warning shot on campus carry bill. [Greg Bluestein tells you what Deal wants | will the Senate Judiciary Committee make changes?]

5. Spring doesn't officially arrive until Sunday, but we might get a record high today. [Lauren Foreman tells you more | your Atlanta weather forecast]

Bonus content

Throughout March, we're celebrating Women's History Month. Today, we bring you the story of Elizabeth Blackwell, the first woman in America to earn a medical degree.