Well, he's clearly determined to get a military funeral that's for sure. This is depressingly familiar, and I've been to a few funerals following this type of stupidity. As mentioned, the risk versus reward is so stacked against you it's just plain stupidity. His wingtip clearance in those turns must be negligible (it's very common to forget you've got bits on the side when you get low-level tunnel fixation), OK, if it's Croatia the wire plot might be well known, but anyone can, and does, string up a wire without notice. He's also assumed all of those trees are a uniform height and there isn't a lone pine out there waiting to pluck him from the sky, masked by the rising ground in the distance. Chances of a birdstrike are massively increased and as for the bridge, well even in a helicopter the procedure requires you to check it out at a hover taxi before venturing forth.
Ultimately, this type of flying will result in a 200 yard grease stain and the accompanying smoking hole long before you've gained any tactical advantage by being 25 feet lower than you need to be. Still, the never ending accident reports demonstrate that someone out there will have been impressed by this blatant disregard of all aspects of professionalism. Forgive me for not attending your funeral.