(Charlotte Observer) Two miles of concrete barriers. More than five miles of 9-foot “anti-scale” steel fence.

Nearly eight miles of lightweight metal barriers, and portable vehicle barriers designed to withstand the impact of a 15,000-pound vehicle at 50 mph.

These are some of items the Secret Service is seeking to protect the Democratic National Convention in Charlotte, according to a federal government contract request released this week.

The Secret Service’s proposal lists four Charlotte sites that will be secured for the convention, to be held Sept. 4-7.

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