The opening of the gates Sunday morning at the Circuit of the Americas was delayed after officials found something suspicious.
While doing their routine security check, officials say a canine unit detected something near turn one of the track.
Officials played it safe and called in additional law enforcement to check it out.
Luckily they determined it was a false alarm.
The incident only caused about a 30 minute delay and the gates opened at 8 this morning.
The second US Grand Prix at COTA has wrapped up and more than 113,000 race fans showed up on Sunday to watch the race.
Cathy Olive lives on Elroy Road right behind the Circuit of the Americas.
She's never been a fan of the noise that comes from the track.
Complete with ear protectors, during Sunday's Grand Prix she was taking decibel readings.
"Once the race started at 1, the noise registered anywhere from 77 to 91 decibels," Olive said.
Olive says the traffic is not as bad as last year but she's not taking any chances.
"I had to get my groceries on Tuesday and I locked myself in. And I won't leave until Monday maybe or Tuesday. So I'm pretty much a prisoner in my own home," Olive said.
Olive says she just wishes COTA officials would sit down with her and talk about ways of mitigating some of the noise.
Not everyone on Elroy Road feels the same way about the track as Olive does though.
"It's fractured, it's always fractured. A lot of people just leave. They don't want to put up with this noise and they don't want to put up with the traffic. Some people have figured out a way to make lemonade out of lemons and they do parking or they sell bottled water," she said.
Right next door is an example of "making lemonade" -- Oscar the ranch hand is helping his boss run a small parking lot on his property.
"Put a sign up out there by the road and the cars come in...and then they park," Oscar said.
Pretty simple formula. They're charging $20. Much cheaper than parking on COTA grounds.
"And then they pay me money and I give it to my boss and they leave! We kind of stay here and keep an eye on the cars and that's pretty much it," Oscar said.
Oscar says they've done well this year financially.
A few miles away from COTA, El Chanclas Taqueria is a place race fans can't help but see as they're going to or leaving the track.
Ilsa Ramirez translated for her mom Juana.
"It's been very good, she's been having people here since Friday," Ramirez said.
The Ramirez family says people from out of state who stopped by last year had to give them a try again this year.
Many of them had never tried gorditas or menudo before.
"There's more people than what she really expects and she really likes the fact because it's good for her, her business and her family," Ramirez said.
The Circuit of the Americas drew more 250,000 people over the three day race weekend.
That's roughly 5% down from last year's inaugural event.