Here is a video of a guy being sucked into the jet engine of an A-6 Intruder and he lives!
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His uniform got sucked in first and hit the FOD sensors, so the pilot killed the engine. Apparently nobody knew the FOD was the trainer until he climbed out of the engine with minor head injuries and a broken collar bone three minutes later. He was checking the work of the guy he was training and walked the wrong way while the engine was at full throttle. More details on this page near the bottom.