San Bernardino police have been widely commended for their quick and effective response to the Dec. 2 terrorist attack. Within four hours of the mass shooting that left 14 people dead, the suspects had been tracked and were later killed in a gun battle.

But when San Bernardino Police Chief Jarrod Burguan reflects on what happened in those frantic hours, he knows not everything went smoothly.

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Stanford Law School professor David Sklansky, who has studied policing, called for balance when it comes to beefing up equipment.

“There are legitimate uses in policing for military-style equipment,” he said. “At the same time, that type of equipment can be overused.”