The same truck, had it been loaded with explosives, could have been a devastating weapon if it made it close enough to an occupied building, he warned.
"Driving the box truck was a dry run for driving a box truck that was not going to be empty the second time," said Dave Katz, a former DEA agent and the CEO and founder of Global Security Group. "Can I prove that? No. But it's like the 9/11 hijackers trying to get aboard planes with box cutters on other occasions prior to actually perpetrating the act."
According to the report from the federal government's 9/11 Commission, conspirators took cross-country test flights, smuggling box cutters onto planes before determining "the best time to storm the cockpit."
"It's
their equivalent of a feasibility study," Katz said. "What would happen
if we get off the highway in a box truck and try to get into the base?" Read more and see videos here.

