An additional three million more people passed through security checkpoints over the weekend leading up to Christmas, even as public health experts warn traveling could exacerbate COVID outbreaks in the country.
On New Year's Day, the country's daily case count could reach over 614,000, according to forecasts from the Institute for Health Metrics and Evaluation.
Nearly four million people traveled by air since the start of this week, according to the TSA's records.
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According to data released by the Transportation Security Administration, nearly 5 million people passed through airport security checkpoints between Friday, November 20 and Tuesday November 24.
The CDC has advised against Thanksgiving travel but figures suggest many Americans are flying ahead of the holiday.
Agents did not have access to enough personal protective equipment, including N95 masks, according to allegations by a TSA federal security director in Kansas.
Passengers are advised to arrive at the airport before their flights to allow sufficient time for the security screening process.
A report claims airport passenger temperature checks could soon be carried out as soon as next week.
Traveler numbers have plummeted since President Donald Trump declared a national emergency on March 13.
The Department of Homeland Security banned use of the social media platform on department-issued mobile devices.
Authorities say a Florida man was caught trying to bring a loaded gun past an airport security airport in upstate New York for the second time in three weeks.
Authorities caught 67-year-old Marilyn Hartman trying to move TSA line dividers inside O'Hare International Airport in Chicago.
"It was really scary, now that I look back on it," said a passenger who was on Delta Air Lines Flight 1516. "I want to know what her intentions were, because it just shouldn't have happened."
"TSA holds contractors to the highest ethical standards and has zero tolerance for this type of behavior," the agency said in a statement.
Customs agents seized 5,255 baby red-eared slider turtles they found in suitcases belonging to two Indian men, who claimed they were selling the reptiles as pets.
Changes to the TSA mean Americans will have to update their IDs. Does that mean bringing a passport for a domestic flight?
As tens of thousands of TSA employees work without pay during the government shutdown, an airline passenger berated Republican Representative Rodney Davis of Illinois for his first-class seat.
The governor of California defied the Trump administration and advised workers to apply for unemployment benefits.
"The federal government should be a model employer for this country, but right now they're failing," American Federation of Government Employees TSA Council President Hydrick Thomas said.
"We urge you to take the necessary steps to immediately end the shutdown of government agencies that is affecting the safety, security and efficiency of our national airspace system."
Unions representing TSA workers, air traffic controllers and airline pilots are demanding that President Donald Trump and Congress end a 16-day partial government shutdown that has wreaked havoc on air travel, with long security wait times and concerns about safety.
At one airport, TSA is expecting to screen more than 100,000 passengers per day.
Agents check passengers for signs, including body odor or a "cold penetrating stare."