We built this space age, self contained shooting gallery into a 20' ocean container! When it arrived to the owner's house, it was set onto a gravel base, and simply plugged in. All that was left was to open the doors, hit the on switch and let the "lead,” er... uh... that is "laser light” fly! We flared up the outside with a modest amount of painting and distressed it with several laser blast marks. In the end it looks like a space cargo container on the outside, and the interior of a space ship corridor on the inside. So do your duty... grab yer blaster and save the universe from the latest tyrannical race of space aliens that wants to wipe out humankind and plunder planet earth's resources!!!