Base jumpers Annette O'Neil (top) and Bret Kistler (bottom) of the US leap from the 300-metre high Open Deck of Malaysia's landmark Kuala Lumpur Tower during the International Tower Jump in Kuala Lumpur on September 27, 2014. Some 100 professional base jumpers from 20 countries are taking part in the annual event. AFP PHOTO / MOHD RASFAN (Photo credit should read MOHD RASFAN/AFP/Getty Images)
Video Ad Feedback
Must see: Crazy BASE jumping videos
BASE stands for Building, Antenna, Span, and Earth. Those are the four "exit points" used by BASE jumpers when they take their leaps of faith.
0:51 • Source: CNN
BASE jumping 8 videos
Base jumpers Annette O'Neil (top) and Bret Kistler (bottom) of the US leap from the 300-metre high Open Deck of Malaysia's landmark Kuala Lumpur Tower during the International Tower Jump in Kuala Lumpur on September 27, 2014. Some 100 professional base jumpers from 20 countries are taking part in the annual event. AFP PHOTO / MOHD RASFAN (Photo credit should read MOHD RASFAN/AFP/Getty Images)
Video Ad Feedback
Must see: Crazy BASE jumping videos
0:51
Now playing
• Source: CNN
Sunshine Superman Clip 9_00000825.jpg
Video Ad Feedback
BASE jumping, '70s style
0:39
Now playing
• Source: CNN
BASE jumping evolution_00001030.jpg
Video Ad Feedback
BASE jumping evolution
2:53
Now playing
• Source: CNN
orig world record jump burj khalifa npr_00003228.jpg
Video Ad Feedback
This video will make your heart stop
1:01
Now playing
• Source: CNN
BASE jumping dangers_00022528.jpg
Video Ad Feedback
BASE jumping dangers
3:11
Now playing
• Source: CNN
BASE jump 2 cfb
Video Ad Feedback
Jumping off a 900 ft. bridge for fun
1:31
Now playing
• Source: CNN
tsr moos elderly 102 birthday jump_00014812.jpg
Video Ad Feedback
102-year-old woman goes airborne
2:16
Now playing
• Source: Sean Chuma Base Jumping
mt everest base jump
Video Ad Feedback
Watch this guy jump off Mount Everest
0:55
Now playing
• Source: CNN