A national flight ban should end sometime Thursday -- and when planes begin moving at Pittsburgh International Airport, access to the air-side terminal will be greatly restricted.

Allegheny County Airport Authority officials announced new rules that would keep vehicles away from the land-side terminal and keep everyone except passengers and airport personnel out of the air-side terminal.

The land-side terminal contains ticket counters and baggage claims and is the only terminal accessible to parking lots. Passengers must go through it and access the underground people-mover to the air-side terminal, where passenger gates and Airmall shops and restaurants are located.

Until further notice, there will be no curbside check-in or off-site baggage check-in from hotels and other sources. Vehicles are not allowed to stop -- even briefly -- outside the land-side terminal.

Instead, passengers must be dropped off at lots and walk, or take a moving walkway to the terminal. The airport will allow all vehicles picking up or dropping off passengers to park at those lots for free for 30 minutes.

Taxis, courtesy buses and limousines will be rerouted to other drop-off areas away from the land-side terminal. Signs alerting drivers to the new traffic patterns have been posted, and new roadways have been cut and paved.

Jim Peters of the Federal Aviation Administration told WTAE's Ellen Gamble that domestic flights would be cleared to resume at 11 a.m. Even then, the airport probably will run fewer flights than normal for a couple of days until planes that were diverted during Tuesday's crisis can be returned.

Allison Brown, a security supervisor at Pittsburgh International who was hired by Huntleigh USA Corp., believes that someone could take a disassembled gun through airport security.

"We're not trained to know what an object would look like taken apart," Brown told WTAE investigative reporter Jim Parsons. "Most people wouldn't know what pieces of a gun look like. Most people don't know what bullets look like on the X-ray machine."

Huntleigh USA is a private security firm that mans the airport's metal detectors and X-ray machines.

Brown said that Huntleigh pays some security personnel $6.50 an hour, less than what fast-food workers and janitors make at the airport. She said the pay rate contributes to a 400 percent turnover rate.

"Employees come and go in the same week," she said. "That's pretty much a big joke around Huntleigh -- 'Oh well, how long are these ones going to last?'"

William Scott, a former airport security worker who is now employed by an airline, told Parsons that he once brought pepper spray past security by accident, then turned back and dropped it off in his car. He said nobody stopped him.

Huntleigh officials declined to discuss security issues with Action News. Airport Authority spokeswoman Joanne Jenny said security workers at Pittsburgh International do an excellent job.