Knoxville (WVLT) -- Saturday evening should be an explosive one.
That's because it marks Knoxville's 20th Annual Boomsday Festival.
The all day event begins at noon and finishes up with a half hour grand finale at 9:30.
After two decades its biggest claim to fame is that it boasts the nations largest Labor Day fireworks display.
Boomsday is also used as a testing ground for LaFollette based Pyro USA.
According to its technicians, this year's crowd will see thing's it has never seen before.
"We have quiet a few different types of fireworks and we have quiet a few different surprises this time," said Mike, of Pyrotechnician.
The Pyro USA crew spent Saturday afternoon setting up their display.
You should remember that Boomsday will close some roads near downtown.
The Henley Street Bridge is obviously closed.
All lanes of Neyland Drive from Walnut Street to Lake Loudon Boulevard have also been blocked off.
They will remain closed until early Monday morning.
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