All parachute training for the RAF and Army takes place at RAF Brize Norton; the RAF 's refuelling force (10 Sqn and 101 Sqn) operate the Voyager, the RAF's largest aircraft, a converted Airbus A330 which carries 111 tonnes of fuel; they also operate the twice-weekly air-bridge to RAF Mount Pleasant; Brize Norton has 24 C-130 Hercules, 8 C-17 Globemasters (99 Sqn), 8 Voyagers (the replacement for the VC-10), and one A400M Atlas (the future replacement for the Hercules). The Blue Cross animal charity are further north on the B4020. Siemens Magnet Technology (former Oxford Magnet Technology), the main provider of superconducting magnets (30% of the world's market) for MRI scanners, is in Eynsham; in Witney is Wychwood Brewery (owned by Marstons) which makes Hobgoblin, and brews Brakspear Brewery (formerly of Henley until 2002).