Security preps increase as Super Bowl nears

HOUSTON (KTRK) -- With a million people expected to attend Super Bowl 51 events in Houston and 140,000 visitors expected for game day, security is proving to be a massive undertaking.

Federal agents will work alongside state law enforcement, local agencies and private security, according to FBI officials.

"Just because you don't see us, it doesn't mean we are not there," special agent Shauna Dunlap said.

Dunlap said, along with uniformed officers, some will be all but invisible. She said there's no credible threat for the Super Bowl but recent attacks in other areas have authorities on alert.

"With recent events in the United States and overseas like we've seen, whenever there are large gatherings, there's an increase for safety concerns," she said.

At the George R. Brown Convention Center where fans will also flock, security guards with private company S.A.F.E. are already working. The company has provided security for Super Bowls for more than a decade and has hired many temporary workers in the area, according to its website.

Come game day, NRG Stadium visitors can expect the NFL's clear bag policy to be in effect. Read more about the NFL's policy here.

Law enforcement will also be working overtime but say their best tool is help from residents.

"Despite the high tech and investigative efforts, it's important to note that sometimes the most important information doesn't come by way of technology. It comes from the public," Dunlap said.