agents are watching over the Super Bowl in California.

But if you walk around Santa Clara or San Francisco, you’ll see lots of security in the streets.

Fans heading into Levi’s Stadium won’t be able to bring backpacks -- only clear plastic bags.

That’s just a small part of the massive security measures in California aimed at keeping the more than a million people who are either at the game or spending the week in Santa Clara safe.

You can see police on many corners, patrolling the streets in San Francisco and Santa Clara. You can also see helicopters and patrols in the bay.

Organizers say there are no credible threats right now, but San Francisco Police Chief Greg Suhr addressed one thing many people haven’t taken into account: the dangerous Denver defense.

“I was saying, when people were saying six-point spread, this is a different defense than the Broncos team that went up against the Seahawks,” Suhr said. “So I think this is going to be a great game.”

It’s a fun answer from the chief, but that doesn’t mean security isn’t being taken seriously.

Officials are asking tourists to say something if they see something.

There will also be 4,000 security personnel working the venue and at stadium security entrances.

(© 2016 KUSA)