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See what happend when a large Glyph took off over the Thames in preparation for Halo 4's launch.

Halo 4 descended from the skies in the UK as a giant, glowing, orange Glyph was flown over the River Thames in London. A custom made Glyph measuing 50 feet in diameter and weighting over 3 tons was created escpecially for the stunt. The Glyph featured 113,000 LEDs consuming 20 KW of power, and became one of the world's largest and brightest structures to ever be flown over a capital city.