the planroednt iukraine, nearing border. that's when s terribly wrong. >> whaablyhappened, this crew was fly along on auto pilot, in the middle of theday, of that aircraft and all t d oud tonight the u.s. beliesexplion was caedy aine blown outsky.t down, not accint >> they wouldn't have had a chance to outmaneuver it, once the missile impacted the aircraft, that flight was >> reporter: it's unclear who filed the missile, but7 did fly over a war zone. confli bwe the russians and the ukrainians. >> it's hard to understands why you would route an aircraft over a known combat zone. >> but the plane's altitude was determined to be safe for commercial air traffic, even though nato's top commander philip breed love said recently that russia has been providing air defense training to the pro-russian rebels. >> why this malaysian flight did not file to go left or right and not over the combat zone is still a mystery tonight.ndor photogra abc news freelance produceroh wl was one of the first journtsat ing the scene to george stephanop