Pentagon Suspends Training For Saudi Military Students In U.S.

Following a shooting by a Saudi airman at a Pensacola Air Station, foreign students in the US are barred from operational training. The Defense Department is reviewing its screening process for foreign students. The gunman legally purchased the firearm used in the attack, which is being investigated as an act of terrorism by the FBI.

How did the gunman acquire the firearm used in the shooting?

What is the FBI investigating the shooting as?