ELI5: Explain Like I'm 5

Naval Air Station Pensacola shooting

So, there was a big building called a naval air station in Pensacola, Florida. That's where the army people who fly planes go to train and learn how to do their jobs. Unfortunately, there was a very bad person who went into the air station and started shooting guns at people. A bunch of people got hurt and some even died. The police came and stopped the bad person, but it was a really sad and scary time for everyone involved.