The 24/7 entertainment capital of America requires some truly unique jobs – seen best from the air. Every day, specially trained scuba-diving engineers fine-tune the dancing fountains of the Bellagio, as window washers risk their lives rappelling down the glass pyramid of the Luxor. The colorful casinos, zip lines and shows might draw most of the attention, but just outside town are 200,000 acres of protected wilderness and a colossal pile of stone called Red Rock, a mecca for climbers.