Long Island’s popular Memorial Day air show is going futuristic this year, trading its iconic fighter jet performance for a patriotic light show featuring 1,000 drones over the Atlantic Ocean.  The show’s first-ever drone performance, scheduled for 20 minutes on May 24 at 9 p.m., bumps the traditional air show to the Fourth of July weekend — July 5 and 6 — as part of the state’s broader celebration of the 250th anniversary of the signing of the Declaration of Independence .  The flying robots will be sent soaring up to 400 feet in the air, synchronized to patriotic music, and form 3D-moving images across the nighttime sky depicting various symbols such as bald eagles, Uncle Sam’s hat, and, of course, the American flag. Long Island’s notorious Memorial Day air show is going futuristic this year with its first ever drone show.…