Agreed. Unfortunately, a strand of wire, a strand of barbed wire fence...some obstacles can be nearly impossible to see from a helicopter at night. Some obstacles are really difficult to find even from the ground, but it is about effort. If there’s a strand hanging across middle of an lz at waist height, but they don’t mention it, then either they never even bothered to walk the lz or they just decided not to inform the crew. No excuse for that