The security effort is not nearly so intense for air cargo at any one point.

Kennedy Airport is still the country's leading center for air cargo.

In 1972 more than 5,000 tons of air cargo went through the airport.

The airport handles 60 percent of the air cargo that comes through Texas.

By 1957, the airport was the third busiest in the world for air cargo.

One of the rule changes will enable air cargo to clear customs more quickly.

Domestic air cargo was up 10.3 percent, measured by the number of tons and the distance they were moved.

In more recent times Louisville has become a national hub for air cargo, creating over 20,000 local jobs.

In the 1990s the air cargo terminal and parking facilities were made bigger.

"All our food is brought in by air cargo - at 70 cents extra per pound," she said.