Mark Strassmann Outside News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> we have an international training. we have students from several different countries that come here. they learn aviation. they become naval aviators while they're here. >> reporter: the naval air station is a sprawling facility. it's also home for the blue angels, the precision flying team. heroics by pentobarbitol's first responders saved today's carnage from getting worse. >> they ran to the fight, not from the fight. and even though they knew there was an active shooter, and, again, the chances of putting your life in danger are great, guess where they went? they went inside. >> reporter...

But this morning, he stormed a classroom building and opened fire, killing three people. police say they took him down in a gun fight. the base on the florida panhandle was on lockdown most of the day. it is the second shooting this week at a u.s. naval base. tonight, there are questions about how a saudi national got a gun, and what motivated the killing? jeff pegues has new information about the shooter, but we're going to begin with mark strassmann outside the naval air station. and, mark, i understand this is still an active crime scene. >> reporter: yes, norah, still an active crime scene...