By Robert Harvey LONDON, June 3 (Reuters) – Many airlines have been hit hard by price swings in the jet fuel market, and some are not in a position to hedge their exposure, the International Air Transport Association’s head of fuel said on Wednesday. Get the Latest US Focused Energy News Delivered to You! It's FREE: Quick Sign-Up Here Some airlines with more elaborate hedging strategies get a bit of a cushion, Daniel Chereau told the S&P Global Energy Middle East Petroleum and Gas Conference.