By Leah Thorsen St. Louis Post-Dispatch

By spring, travelers in both terminals of Lambert-St. Louis International Airport could be sniffed by dogs with special training to detect explosives as passengers stand in line.

Until then — and through the busy holiday season — Southwest Airlines passengers using Terminal 2 will see the Transportation Security Administration dogs, which started working at the airport earlier this year, said Jim Spriggs, Missouri’s federal security director.

The dogs are trained to follow the smell of explosives through the air and to check for that scent on passengers waiting to go through security.

And if the dog doesn’t detect any suspicious smells, passengers may be cleared to go through the TSA’s PreCheck screening, which allows preapproved passengers to bypass the main line and keep their shoes on.
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