The Storm Shadow is a Franco-British low-observable, long-range air-launched cruise missile developed since 1994 by Matra and British Aerospace, and now manufactured by MBDA. "Storm Shadow" is the weapon's British name; in France it is called SCALP-EG. The missile is based on the French-developed Apache anti-runway cruise missile, but differs in that it carries a unitary warhead instead of cluster munitions.