美国航空安全得到改善，在过去十年中，每百万次航班的死亡人数显著下降。 U.S. aviation safety improves, with fatalities per million flights significantly down over the past decade.

美国航空安全统计数据显示，安全记录良好，事故率低。 U.S. aviation safety statistics show a strong safety record with a low accident rate. 在过去十年中，每百万次航班的死亡人数显著下降，凸显了航空业安全措施和法规的改善。 Over the past decade, the number of fatalities per million flights has significantly decreased, highlighting improved safety measures and regulations in the aviation industry.