The SS-20, known as the "Pioneer" in Russian, is a two-stage, solid propellant missile with three multiple targetable reentry warheads.

Washington, USA, - June 11,2014: The SS-20, known as the "Pioneer" in Russian, is a two-stage, solid propellant missile with three multiple targetable reentry warheads. The missile is almost 16.5 meters tall. Painted on missile are the letters "CCCP" and a yellow five-point star. The skylight in the National Air and Space museum is shining in sunlight in Washington which holds the largest collection of historic aircraft and spacecraft in the world.