Five things to know Tuesday, March 22:

1. Authorities locked down the Belgian capital on Tuesday after explosions rocked the Brussels airport and subway system, killing at least 28 people and injuring many more.  [Read the story here | what we know right now | photos from the attacks]

2. Two people were shot Monday night near Piedmont Avenue and the Georgia State University commons, Atlanta police said. [Ellen Eldridge and Ben Gray have the details]

3. The curious silence of the party-backed Democrat running for U.S. Senate. [Greg Bluestein has the story on Jim Barksdale]

4. Former Georgia football player Damian Swann, now of the New Orleans Saints, was booked into Athens-Clarke County jail. [Chip Towers tells you why]

5. It feels like you might need a coat this morning. What about this afternoon? [Get your Atlanta weather forecast here]

Bonus content

March is Women's History Month. Today, we bring you the story of Mara Brock Akil, who spent years writing for "Moesha" and "The Jamie Foxx Show" before creating and serving as executive producer of "Girlfriends."