Watch record-breaking BASE jump from world's tallest building

Two French skydivers jumped off the world's tallest building, the Burj Khalifa in Dubai.

Fred Fugen and Vince Reffet set a new Guinness World Record for tallest BASE jump from a building, with their leap this week. The Burj Khalifa is 2,700 feet tall, standing more more than half a mile tall.

BASE jumping refers to jumping off stationary objects and is an acronym for these objects: building, antenna, span and Earth (such as a cliff).

Before the jump Monday, the duo practiced for a week jumping off a mountain near Lauterbrunnen, Switzerland, which is almost the same height as the Burj Khalifa, according to the Guinness World Record website.

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