I'm reading "Three Hundred Zeroes" and at one point (p175-177) the author mentions that on at least 4 occasions during his hike (full AT, split over 2 years) a helicopter with no lights on hovered just over the treetops over the AT shelter/campsite he was at during the night. He speculates (not sure how seriously) about the helicopters testing some kind of identification technology that would be useful in guerrilla warfare and claims he learned in conversation that "many other hikers" have experienced similar odd helicopter activity while on the AT.
Is Blanchard ribbing us? Has anyone on these forums witnessed odd nocturnal helicopter activity while on the AT?