Russia revealed it was developing several hypersonic missile systems last year.

But this is Lockheed Martin's second hypersonic missile development contract.

The X-51 hypersonic missile had its first successful flight.

Some reports have speculated that the test may have involved a new hypersonic missile called Tsirkon.

The Air Force is pressing on, however, with a new hypersonic missile for its stealth fighters.

Also, don't think it's a coincidence that Russia now wants a hypersonic missile of its own.

Putin talked about the coming deployment of the new hypersonic missile for the Russian navy in 2019.

An X-51 Waverider hypersonic missile attached to the wing of a B-52 bomber.

They include a nuclear-powered cruise missile, a nuclear-powered underwater drone and the hypersonic missile that apparently has no equivalent.

That's why the two countries are also developing a hypersonic missile capable of traveling more than five times the speed of sound.

Russia has threatened to make a new mid range hypersonic missile in response to the US pulling out of the Intermediate-Range Nuclear Forces Treaty.

It showed a Russian MiG-31 fighter jet taking off from an airfield carrying the new Kinjal hypersonic missile and then launching it while airborne.

Hypersonic missiles traveling at more than five times the speed of sound would be hard to intercept.

Under construction are many hypersonic missiles.

It has invested heavily in new aircraft, new tanks -and new technology such as stealth and hypersonic missiles.