Police said they responded to the main TSA security checkpoint for Hartsfield-Jackson Atlanta International Airport about the firearm.
The 58-year-old man faces a reckless conduct charge, and he was taken to the Clayton County Jail without incident, police said.
An employee with the Transportation Security Administration (TSA) was recently arrested at Hartsfield-Jackson Atlanta International Airport.
Dickens says he wrote a letter to the federal government last month hoping to find a solution to what he calls frequent TSA callouts.
Travelers have also been forced to wait for extended periods of time to pass through security and endure long waits for flights.
At Hartsfield-Jackson Atlanta International Airport, all runways and roadways were clear and operational the day after snow blanketed the region.
An issue with TSA staffing prolonged wait times Wednesday morning as the airport dealt with weather-related delays.
More than 6,600 firearms were intercepted at airport security checkpoints in the year and nearly all of them were loaded, the Transportation Safety Administration said.
Winter weather caused headaches for some travelers at Hartsfield-Jackson Atlanta International Airport on Tuesday, affecting over 1,100 flights.
All Hartsfield-Jackson runways are clear, but TSA staffing callouts caused long security waits Wednesday morning.
As winter weather bears down on the metro Atlanta area and dangerously cold temperatures remain through the day, there have already been a number of cancellations and delays for flights into and out of the Hartsfield-Jackson Atlanta International Airport.
The Atlanta airport is facing hundreds of delays and cancellations, as well as lengthy security wait times, as a winter storm hits the South.