I’m a huge fan of helicopters.
If there’s a helicopter flying where I can see it, I usually stop and watch it.
As a kid, one of my favorite Christmas presents was called the Vertibird, which was a toy helicopter with a real set of blades that turned. The chopper was attached with a long cable to a base with a motor. The Vertibird flew in a circle with a very advanced set of controls that allowed for precise hovering.
