<https://codefling.com/plugins/heli-signals>

The Heli Signals feature allows players with appropriate rights to summon an attack helicopter to a designated location using a special supply signal.

The helicopter will attack players and patrol the area, allowing players to fight it to get valuable Heli crates.

The plugin comes with 8 default helicopter profiles: “Light”, “Medium”, “Difficult” and “Elite”,

as well as duplicates of each of them to simultaneously summon multiple helicopters at each level.

In addition, there are 2 Wave Heli profiles that trigger a wave of different helicopters one after the other.