The R-1 rocket (NATO reporting name SS-1 Scunner, Soviet code name SA11) based on the German V-2 rocket manufactured by the Soviet Union. Even though it was a copy, it was manufactured using Soviet industrial plants and gave the Soviets valuable experience which later enabled the USSR to construct its own much more capable rockets. The R-1's insulated electrical wiring attracted vermin. In one January 1953 incident, thousands of flood-displaced mice disabled many rockets by eating the insulation, requiring "hundreds of cats and repairmen".