The Department of Transportation Wednesday awarded $13.7 million to Los Angeles International Airport for perimeter fence installation.

The grant is part of a $520.5 million investment through the Airport Improvement Program for infrastructure projects across the United States, according to the DOT.

“This $520.5 million in federal support to airports across the country will help to keep our nation’s airports in good shape and make air travel a better experience for passengers,” U.S. Secretary of Transportation Elaine Chao said.

Calls to LAX about the details of the perimeter fencing were not immediately returned.

“America’s airports provide a gateway to the world for our citizens while at the same time delivering first impressions of the United States to visitors from abroad,” said Steve Dickson, the administrator of the Federal Aviation Administration. “It’s in our national interest to make them the crown jewel in our transportation system.”

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