Super Bowl 50 isn't just the biggest sports event of the year - it's also one of the largest security events.
Everywhere you turn in the San Francisco Bay area Sunday for the big game, you will find a massive security presence, from the water to land, and even in the air, reports CBS News correspondent Michelle Miller.
The Air and Marine branch of Customs and Border Protection is one of more than 50 law enforcement and government agencies working together to keep Super Bowl 50 secure.
"We're here enforcing the temporary flight restrictions," said John Priddy of the U.S. Customs and Border Protection. "We have the capability that we can put eyes on anyone within the 30 nautical-mile radius in a pretty short amount of time."
Their video cameras are powerful enough to clearly see the faces of anyone in the vicinity of Levi's stadium.
The Bay Area is already home to a state-of-the-art surveillance infrastructure, with license plate readers and controversial cell phone trackers that could let police monitor your phone.
Since the Super Bowl is happening in the heart of Silicon Valley, some agencies are trying out new technologies, including a data collection program that gives law enforcement a more complete picture of what's happening all over the Bay Area by integrating video feeds with agency cell phone and radio communications.
Outside Levi's stadium, Customs and Border Protection agencies screen all cargo going into the venue with giant X-ray machines that can detect radioactive material.
"It's a level one event every year - one that will test those both on and off the field," Priddy said. "While the Super Bowl is a sports event and not a security event, we've got a pretty big job enforcing security here at the Super Bowl."