For the most part Posse Comitatus refers to the actual "enforcing" of the law. That is, making the arrest, bringing someone to trail. These days, it isn't unusual for the military to help out LE, usually with sensors. If you "see" something and report it so that LE shows up and can make an arrest on the information available to them when they roll up, no biggie. If they need you, or the record of what you "see", a bigger deal, but it could be done. It isn't like you have Blue Thunder like capabilities to see through walls and violate someones constitutional rights under the color of law. Oh, and lasing of LE aircraft has gone up by nearly two fold every year the last three years or so. It is a huge problem. That is why the cops would love to bust anyone that hassles you guys.
If there has been some new direction, or even law, on recording us citizens I am unaware of it. Certainly civil libertarians wouldn't want a long time record of citizens actions kept by the military. But then you active guys are in a better position to know. It doesn't mean a thing to me whopping around in a helo with a star on the side. But it is my experience that most guys are totally misinformed on posse cometatus. Just because you are in the military doesn't mean you can't be a good citizen and help law enforcement incidental to your mission. The incident described above by gatordev is totally cool and I am sure not in violation of posse cometatus. Now if your squadron coordinated with LE and had occasion to land and detain folks at the direction of LE. That would be over the line.
Thinking too much like a hinge. Who cares? You don't write the check.I can see where that might exceed a CO's comfort level. Again, I think it's cool that they got the guy and helped, but I understand the reservations.