public class LaunchPad
{
    public static void main (String [] args)
    {
	ShuttleLaunch ent = new ShuttleLaunch ("Enterprise");
	ShuttleLaunch voy = new ShuttleLaunch ("Voyager");
	ShuttleLaunch col = new ShuttleLaunch ("Columbia");
	Thread t1 = new Thread (ent);
	Thread t2 = new Thread (voy);
	Thread t3 = new Thread (col);
	t1.start ();
	t2.start ();
	t3.start ();
    }
}