Drone show lights up the sky over Philadelphia's Independence Hall

Philadelphia held a drone show outside Independence Hall to highlight the upcoming Fourth of July weekend in the United States. The drones formed images of American history, including Martin Luther King's 'I have a dream' speech and the 1969 moon landing. #philadelphia #usa Subscribe: http://smarturl.it/AssociatedPress Read more: https://apnews.com​ This video may be available for archive licensing via https://newsroom.ap.org/home