A massive UFC event is set to take over the White House's South Lawn. The temporary arena resembles a cross between a UFO and a claw game in a video arcade and features an eight-sided cage and a towering structure of lights, speakers and wiring called The Claw. The event celebrates President Donald Trump's 80th birthday and the 250th anniversary of the Declaration of Independence. The National Park Service is contesting a lawsuit to block the event, which costs more than $60 million. The fights are scheduled for Sunday night, with additional activities planned throughout the weekend. UFC chief Dana White insists the show will go on, rain or shine.