BASE jumper Brant Moisel of Townsville, Australia leaps with a parachute off Kuala Lumpur Tower Sept 29, 2011. BASE jumping is an activity that employs an initially packed parachute to jump from fixed objects. "BASE" is an acronym that stands for four categories of fixed objects from which one can jump: buildings, antennas, spans (bridges), and earth (cliffs).[Photo/Agencies]