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People throw petrol bombs, bricks and fireworks at police.

Dozens of U.S. aircraft, hundreds of military vehicles, and thousands of soldiers are expected to take part in the parade, followed by a fireworks show.

He’s improving, but he’s still more anxious than he used to be and rattled by fireworks in the nightly warm-up for Fourth of July.

Police said 63 of their officers have been injured over four nights of violence after coming under "sustained attack with heavy masonry and fireworks".

Police said 63 of their officers have been injured over four nights of violence, with 22 injured in Portadown on Thursday night after coming under "sustained attack with heavy masonry and fireworks".