It turns out that at least one of the two military facilities attacked in Chattanooga, Tennessee -- was a gun-free zone.

If you looked closely crime scene photographs - you can see the sign -- plastered on the front of a bullet- riddled window.

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Four Marines were slaughtered -- a fifth wounded -- along with a Chattanooga police officer.

Authorities say the gunman, identified as 24-year-old Muhammad Youssef Abdulazeez, was killed in a shoot-out.

Abdulazeez is reportedly a Kuwaiti-native who attended high school in the Chattanooga area. The Times Free-Press posted his graduation photo – that included the phrase; “My name causes national security alerts. What does yours do?”

The FBI says it’s too soon to speculate on the suspect’s motive – but I think we’ve all got a pretty clear understanding of what went down.

As many as 50 shots were fired -- and all the survivors could do was barricade themselves inside.

The brave men and women who staff these military recruiting stations are sitting ducks. Soft targets - is the terminology they use.

The same thing happened at the Fort Hood massacre.

In response to the shooting Homeland Security ordered enhanced security measures at federal buildings. Since they can’t carry weapons what are they going to do? How are they going to defend themselves against the next Muhammad Abdulazeez -- lock the doors, pull the shades?

It's time to arm the Armed Forces. Now, I’m sure the experts will say there’s some sort of logical reason why military personnel should not have access to firearms – but I’m not convinced. Brave Marines gunned down in a Southern city -- and that is something we cannot abide. Our elected leaders must give them at least a fighting chance.

It makes absolutely no sense that Marines and Airmen and Sailors and Soldiers who defend our nation are unable to defend themselves – on American soil.

Todd Starnes is host of Fox News & Commentary, heard on hundreds of radio stations. His latest book is "God Less America: Real Stories From the Front Lines of the Attack on Traditional Values." Follow Todd on Twitter @ToddStarnes and find him on Facebook.