Lady Gaga pulls out all the stops in Super Bowl LI halftime show (PHOTOS)



HOUSTON -- The roof is closed for the game but was opened slightly for Lady Gaga's Super Bowl halftime show.

The answer for why came at the end of a spectacular display of lights during her performance. Fireworks were set off from the roof of Houston's NRG Stadium as the show finished.

The roof closed again as soon as the show was over. Some of the smoke and haze from the show escaped, but not all of it. As happens frequently at the Super Bowl — particularly those indoors — there was a haze for the start of the second half.

The New England Patriots trail the Atlanta Falcons 21-3 at halftime. The Patriots have won four straight games indoors. Their last defeat was Super Bowl 46 after the 2011 season, a 21-17 loss to the New York Giants.