No, they could not have. And what makes it an act of terror? Was Sandy Hook an act of terror? Or any other mass shooting? As far as I know, there is nothing that links him to any group or conspiracy. Nor did he plant a bomb, which is generally considered an act of terror. Nor was his target political. His motive appears that he didn't want to deploy to Afghanistan and cracked. Shouting Allahu Akbar doesn't make it a terrorist act.
"Shouting Allahu Akbar doesn't make it a terrorist act."
Are you nuts???
How do you find your way back to that refrigerator box you call home each day???
Shouting Allahu Akbar in and of itself does not make anything a terrorist act. Look up the definition of terrorism.
So...you are nuts.
Take a peek at post #38.