Simplify the following text for a Grade 7 native English-speaking person.
Original: The WWF also aired two Halftime HEAT television specials which aired during Super Bowl XXXIII on the USA Network .
Simplified: For Super Bowl XXXIII in 1999 , Heat aired as Halftime Heat on the USA Network during halftime of the Super Bowl . These specials ended following the show 's move to MTV in 2000 .