Charlotte-Douglas Airport is gearing up for a busy three days of arrivals for the Democratic National Convention.

Aviation director Jerry Orr said Friday there had been no delays so far and they are ready for the expected crowds, including many who are unfamiliar with the airport.

All the arrivals mean changes in traffic.

From Sept. 1 - 3, all commercial ground transportation, including buses and taxis, will use the lower level. Drivers in a personal vehicle will drop off or pick up people in the upper level.

The locations will switch on Sept. 7, the day after the convention. Drivers in personal vehicles will drop off and pick up in the lower level.

"It kind of helps us to separate the DNC people from our normal flow of traffic," Orr said. "The more we keep them separate, the better it'll work."

The only change in parking will be the cell phone lot, according to Orr. The lot will temporarily be moved to 5535 Wilkinson Blvd., across the street from business valet.  He said there will be signs up and staff to direct people.

The Transportation Security Administration will have all lanes open at security checkpoints.

According to Mark Haught, the TSA's federal security director for Charlotte-Douglas, there are normally around 550 officers stationed at the airport, including 41 behavior detection officers who watch for anyone acting suspicious, six transportation security specialists in explosives and seven K-9 teams.

For the DNC, Haught said the TSA is adding 161 officers, including an additional 20 behavior detection officers, five transportation security specialists in explosives and 14 K-9 teams.

Traveler Patricia Duncanson said she didn't even notice.

"There's no inconvenience," she said. "It's good. I like the idea that with all the people coming in, we're so well protected."

Security will also be tight in the air, particularly when President Barack Obama arrives on Air Force One.

Orr said he has to close airspace before, during and after Air Force One takes off, which means flights in a certain area of the airport will be put on hold.

"That throws a little kink in our normal operations, so we just have to work around that," Orr said.          

The TSA said another 55 other officers will help the Secret Service with screening at Time Warner Cable Arena, the Convention Center and Bank of America stadium.