BOSTON (AP) - Tom Brady and the New England Patriots are taking a victory lap through downtown Boston.

  

Hundreds of thousands of fans are lining the streets, cheering wildly as the city's World War II-era amphibious "duck boats" carry players, coaches and their families through central Boston.

  

Security is tight, but the atmosphere is carefree in a city celebrating its second major sports championship in just four months. In October, Boston staged a similar parade to fete the Red Sox after they won their fourth World Series title in 15 years.

  

Quarterback Brady held his pigtailed daughter, Vivian, on an open-roofed duck boat as they grinned and waved to the crowd.

  

The Patriots defeated the Los Angeles Rams 13-3 to win Sunday's Super Bowl 53.