Yesterday, I parked in an empty lot next to a golf course. The community has a security gate and I'm not a member. A wall of trees divides the lot from the golf course. As I was prepping my drone, a helicopter flew out from the direction of the golf course. It was low, just clearing the trees. It was a private helicopter, so I imagine it was someone from the golf community. I'm glad it flew over before I launched. I packed up the drone and went somewhere else. Anyone have a similar experience?