VIDEO: Largest urban zipline looks properly insane

Set against the backdrop of Panama City, these guys set out to prove they have NO fear.

The world's largest zipline is in Panama City and it looks insaaaanne.

Sliding down a 10,000-foot line from a 700-foot building, these guys look like they're having the time of their lives.

And if that wasn't enough, they also decide to release themselves from halfway down the line and parachute gracefully to the ground.

As you do.