Nazi diehard and fanatics fight to the last man to stop Allied forces from freeing Europe, keeping an unrelenting grip on the naval bases, citadels and fortresses of occupied Europe.
　　S4 E1. Killer Causeway
　　After the landing on Normandy Beach, the Battle of Carentan breaks out and an American unit launches a desperate bayonet charge.
　　S4 E2. Bunker Blitz
　　Nazi diehard and fanatics fight to the last man to stop Allied forces from freeing Europe, keeping an unrelenting grip on the naval bases, citadels and fortresses of occupied Europe.
　　S4 E3. Suicide Hill
　　A Japanese American regiment fights through darkened forests, heavy rains and entrenched Nazis to reach a lost U.S. battalion in the Vosges Mountains.
　　S4 E4. Panzer Rush
　　During the Battle of the Bulge, a young U.S. scout gets trapped behind enemy lines.
　　S4 E5. Himmler&♯39;s Folly
　　A United States army cook manages to stall Himmler&♯39;s attempt to recapture Strasbourg.
　　S4 E6. Nazi Tank Hunters
　　A platoon of Canadian tank hunters engages a column of Nazi Panther tanks at nighttime.

　　这是一部惊险刺激、令人肾上腺素飙升的探险类自然动物纪录片。从加拿大北方的雪山群到亚马逊丛林，西里尔·肖凯和他的团队怀揣着对鱼类保护的热情，克服野兽的追捕、原始部族的攻击甚至调研船只的摧毁等艰难险阻，追踪并记录那些濒临灭绝的巨型鱼类，如白鲟、巨骨舌鱼、歌利亚鲶鱼等。这些已经存在了数千万年的传奇巨兽，因为栖息地破坏，环境污染、过度捕捞的影响，正处于危险之中。

　　原本平静的生活，突然被天降之灾撕碎；众人赋予期望的新机型，为何最终成为震动整个航空业的分水岭事件？一幕幕航空灾难大家依然记忆犹新，难以忘怀。空中浩劫第21季，将讲述近年曾经登上世界各地新闻头条的航空灾难事件背后的故事，揭开掩藏在最核心的真相。2021年4月下旬，空中浩劫第21季正式更新，敬请期待！