Incident can make your skin crawl. Worst accident so far was Tenerife, late 70s, and under 600 killed. It was believed to be a worst case scenario, 2 loaded 747s colliding. Looks like we have a failure of imagination, landing a plane on a taxiway with 4 other aircraft on it would have been significantly worse.
The granting of a pardon is an imputation of guilt, and the acceptance a confession of it.