Why was the HTV-2 developed? (Read the text and answer the question)

The US Defense Agency will lanuch the Falcon HTV-2.

The US Defense Agency will set the Falcon on the back of a rocket. Then they will launch both into the space from an Air Force Base.

After being detached from the rocket. HTV-2 will fly towards the Earth.

To operate the flight of the Falcon HTV-2 the engineers will first launch the HTV-2 into the space on the back of a rocket. Then they will detach the plane from the rocket. The plane Falcon will fly towards the Earth and engineers will guide and monitor it to its flight.

The hypersonic aircraft Falcon HTV-2 can fly at a speed of 13,000 miles per hour.

The Falcon was born in 2003.