Despite the warnings to stay home and stay safe, millions of Americans are still expected to travel for Thanksgiving this year.

If you're flying this Thanksgiving weekend, you will likely see members of the National Guard at gates and state Health Department workers in booths collecting forms from passengers landing in New York. The TSA says around 4 million people have already taken to the skies since Friday.

There are plenty of warnings for those choosing to travel over the long holiday weekend.

Gov. Andrew Cuomo held a news conference Wednesday in Rochester and repeated his warning for people to limit gatherings to 10 people in your immediate family amid rising coronavirus cases in the last three weeks.

"Thanksgiving will be an added accelerant," Gov. Cuomo said. "Why? People travel, more social activity. The more social activity, the more the infection rate goes up. We know that."

Over the last few days, many people who are choosing to get together with family for Thanksgiving have been standing in lines at urgent care centers to get last-minute coronavirus tests.

Dr. Robert Levy with AFC Urgent Care says taking a test can be helpful before traveling, but only to a certain extent.

"For those who happen to turn out to be positive, it's helpful for them to know that they're positive, so they don't turn up for any family gatherings. For those that test negative, it is not particular helpful at this point,' Dr. Levy says. "We think that most folks will not test positive for COVID for three to four days after their exposure to the virus, so if someone was exposed yesterday, I test them today, and they're negative, it tells me absolutely nothing about whether or not they actually have the virus."

Dr. Levy says the only surefire way you could have been 100% safe for Thanksgiving was to quarantine for 14 days before the holiday. However, this is not an option for many residents who don't have the ability to work from home.