o 反常环境包括在可信的意外或异常情况下可能发生的情形，包括飞机失事、雷击、船上失火，或者子弹、导弹或碎片撞击。
○ Abnormal environments include conditions that could occur in credible accidental or unusual situations, including an aircraft accident, lightning strike, shipboard fire, or a bullet, missile, or fragmentation strike.