Aikido is a modern, non-aggressive Japanese martial art developed early in the 20th century by Morihei Ueshiba. Here is a compilation of clips featuring a bunch of guys you probably wouldn't want to get into a fight with.
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WARNING: Language - The guy in this video is lucky to be alive today! He had not one but two parachute malfunctions on the same jump! His main chute got tangled then his reserve got tangled.
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