Pentagon Officer Killed In Stabbing Identified As George Gonzalez

George Gonzales, an Army veteran from New York, served in Iraq before joining the Pentagon Force Protection Agency. He was honored with flags at half staff after being attacked and killed. Federal investigators are examining the motives behind the attack, which ended with the assailant being shot by officers.

What are federal investigators trying to determine regarding the attack on Gonzales?

What happened to the man who attacked Gonzales?