Officials in Texas are promising that this year’s Super Bowl XLV will be the safest yet.
More than 100,000 people will be jammed into Cowboys Stadium, and thousands more are expected to pack the streets, bars and restaurants around Arlington and Fort Worth.
Homeland security officers have helped train 1,200 Cowboys Stadium security personnel.
The NFL will provide 3,000 private security officers on Super Bowl Sunday.
There is also extra security on commercial airplanes, flying to and from north Texas.
"There will be some increase in coverage by air marshals and some other undercover increase that people won't see, and in addition on the day of the game itself, air space will be cleared," said Janet Napolitano of the Department of Homeland Security.
Police are asking everyone in North Texas to remain vigilant, urging them to report any suspicious activity, no matter how small.
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