Virgin Orbit says it has been selected by the United Kingdom’s Royal Air Force to provide launches of small satellites on short notice.

The Long Beach-based company announced Friday that the first launch for the ARTEMIS program could come as soon as 2020.

Virgin Orbit is developing an air-launch system in which a rocket carried aloft under the wing of a special Boeing 747-400 is released then fires its engine to insert payloads into orbit.

The company recently conducted a key drop test over a desert range.

Using the jet allows launches to be conducted at optimal locations around the world.

Launches for the RAF will be conducted on as little as a week’s notice.

Virgin Orbit is a sister company of Richard Branson’s Virgin Galactic.