The rendered scene shown in the thumbnails is what comes in the download file, along with a few exported file formats (obj, fbx, dae). So the missile collection that contains the model can be appended into your own scene, if you don't want to use the same scene.

There is a couple keyframes of animation on the rocket fins, to show how they fold out. There are keyframes on the camera and the center empty that rotates the studio lighting setup. The animation can be deleted if desired.