What I like about the description is this:"Called the "poor man's rocket", Scout vehicles were manufactured relatively inexpensively by combining "off the shelf' solid-rocket propellant stages from existing programs. The Scout first stage was adapted from the U.S. Navy Polaris missile, the second stage from the U.S. Army Sergeant missile and the third and fourth stages were from the civilian Vanguard rocket program"Some Lego's look to be in play.