Fifty-thousand people are expected to converge on the Midwestern city of Cleveland, Ohio, for the four-day event that begins July 18.
In Pictures: Preparations for Republican National Convention
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A sign warns against the use of drones outside the Quicken Loans Arena where the Republican National Convention is going to be held in Cleveland, July 16, 2016.
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Workers carry balloons in the Quicken Loans Arena, site of the Republican National Convention in Cleveland, Ohio, July 15, 2016.
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Over 300 officers from other jurisdictions fill out paperwork after being sworn in to have police powers in Cleveland, as preparations are made for the Republican National Convention, in Cleveland, July 16, 2016.
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Army National Guard soldiers guard a communications facility, before the Republican National Convention, July 16, 2016 in Cleveland, Ohio.