The Sukhoi Su-24 (NATO reporting name: Fencer) is a supersonic, all-weather tactical bomber developed in the Soviet Union. The aircraft has a variable-sweep wing, twin-engines and a side-by-side seating arrangement for its crew of two. It was the first of the USSR's aircraft to carry an integrated digital navigation/attack system.Ukrainian Su-24s were used as launch platforms to fire Storm Shadow air-launched cruise missiles, which the British began supplying in May 2023.It was reported that Ukrainian Su-24s were modified with pylons taken from decommissioned RAF Panavia Tornado GR4s in order to carry and fire the Storm Shadow missile. The aircraft can carry at least two Storm Shadow missiles at a time.