text: var AirControl = function(){
    this.planes = [];
    this.airports = [];
  };
  
  AirControl.prototype.createPlane = function(name){
    this.planes.push(new Plane());
  };
  
  AirControl.prototype.createAirport = function(name){
    this.airports.push(new Airport());
  };
  
  
  
  
  