(MOSCOW) — Christophe de Margerie, the charismatic CEO of Total SA who dedicated his career to the multinational oil company, was killed at a Moscow airport when his private jet collided with a snowplow whose driver was drunk, Russian investigators said Tuesday. Three French crew members also died when the French-made Dassault Falcon 50 burst into flames after it hit the snowplow during takeoff from Moscow’s Vnukovo airport at 11:57 p.m.