Notes
First thoughts, running arguments, stories in progress

Raid in Brussels: One suspect was shot and killed and two others are believed to be on the run after a counterterrorism raid in the Belgian city, according to the BBC. Four police officers were wounded in the operation. Belgian forces have regularly carried out raids in the region in search of suspects linked to last year’s Paris attacks.

Live coverage of the Mega Tuesday primaries: Florida and Ohio are the states to watch as polls close tonight. The big questions of the night: Can anyone catch up to Donald Trump? And can Bernie Sanders pull off more upset victories? Follow the action with us here.

Just stay home, Washingtonians: Washington’s Metro announced this afternoon that the entire system will close for at least 24 straight hours starting at midnight in order to perform safety checks of electric cables. Sommer over at CityLab makes a case for why the Metro—already known for shortcomings in safety and management—should stay closed for a lot longer.

The ’gramming games: The AP reports Instagram is planning to reorganize feeds so that they will prioritize photos users are more likely to care about over recently posted photos—just like Facebook does for posts and other content. Bring on the #catsofinstagram shots.

News from the afternoon here

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