Umm... Dear Difi.... He had a shotgun, and two STOLEN handguns... that he got THERE on base.
http://weaselzippers.us/2013/09/17/fbi-no-ar-15-was-used-in-naval-yard-shooting/
Evidently, the poor baby was upset at evil “racists”...
I find this hard to believe, who told him that he was a victim of racists?