In the current crazy quilt of security, some but not all airports demand that jackets be doffed and put through the detection machines.

As of Dec. 31 this year, federal rules will require all bags to pass through explosive detection machines.

Explosive detection machines can also be used for both carry on and checked baggage.

By April, the utility will acquire five vehicle-mounted stray-voltage detection machines linked to video cameras.

Meanwhile, the detection machine - the Egis machine is known by the bomb experts as a "kind of super sniffer" - turned out more positive hits.

But a trained store clerk and every cashier with a detection machine can spot it at once.

Three sets of new types of detection machines have been installed there.

That confidence is bolstered because the first positive result obtained by the detection machine involved a part of the right wing near the fuselage.

Do not put film in your checked baggage - some of the new explosives detection machines will damage undeveloped film.

He got out of the car, stretched, knocked dust off his uniform, and allowed a detection machine to snoop him.