Skydive Milwaukee jumpers spotted a single-engine plane vanish behind trees near East Troy, then leaped from their own aircraft to reach victims and try to help.
https://www.foxnews.com/travel/skydivers-watch-plane-vanish-sight-make-split-second-decision-jump
https://www.foxnews.com/travel/skydivers-watch-plane-vanish-sight-make-split-second-decision-jump