[snarkpup]

That's not a giant fly. This is a giant fly:

Photo by Lee R. DeHaan

[dznutz]

Whoa. I bet he would have been a great help delivering 50 pound blocks of ice back in the old days.

[MarchonDC09122009]

Eastern Dobsonfly, indigenous to N Am Eastern streams.
TG they are not actually as big as that close up photo would have you believe.
Those mandibles do deliver a painful bite.

http://entnemdept.ufl.edu/Creatures/misc/eastern_dobsonfly.htm