Talked to a Typhoon pilot the other day. He flew them in the RAF on missions over France around D-day. German flak guns radar ranging on him would cause clicking noises on his VHF set. He would then weave like mad and sure enough a few seconds later flak would burst where he had been.
He warned others in his formation (usually four aircraft) never to get immediately behind him during their own weaving as the predicted flak would always initially burst behind him. Unfortunately some inexperienced pilots in his formation did just that and were shot down. So beware - ghostly guns may be tracking you....