ROCKET ENGINES LEGAL AGAIN! “District Court Judge Reggie B. Walton for the District of Columbia today issued an order finding in favor of the Tripoli Rocketry Association and National Association of Rocketry vs. The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives. . .. . Walton’s order granted a summary judgment motion in favor of the plaintiffs TRA and NAR, denied the summary judgment motion of BATFE, and vacated the classification of Ammonium Perchlorate Composite Propellant (APCP) as an explosive.”