Aut cum scuto aut in scuto
One of your Exposure pictures gone wrong?
Repelling down or getting pulled up?
I'll bet it's mountain rescue training.
Based on the colors, that looks like a Coast Guard bird, so some sort of rescue training makes sense.
Probably Navy, they have inland bases.
It says NAVY on it, so are confirmed in your belief!
If one should ever find ones self in a position where a helicopter is lowering a line to you (and you'd be surprised how often this comes up) do yourself a favor and let the line touch ground first. Trust me on this.
Static electricity, the rotating blades do a heck of a job generating it. Just grab it once and don't let go, you'll be fine. If you let it go it will generate another charge in an instant, fun to watch from above in a night trainer with a new guy on the ground.Just grab it once...