The SSh-68 (Russian: СШ-68 [стальной шлем образца 1968 года/stalnoy shlyem, or steel helmet], English: SSh-68 steel helmet model 1968) - is a steel combat helmet of the Soviet and then Russian Armed Forces.The SSh-68 is a further development of the SSh-60 helmet. It differs primarily in its greater strength, greater front slope of the dome and the shorter outer edge.

The Aerojet Rocketdyne RS-68 (Rocket System 68) is a liquid-fuel rocket engine that uses liquid hydrogen (LH2) and liquid oxygen (LOX) as propellants in a gas-generator power cycle.It is the largest hydrogen-fueled rocket engine ever flown. Its development started in the 1990s with the goal of producing a simpler, less-costly, heavy-lift engine for the Delta IV launch system.