4月6日美军特种部队在亚利桑那州尤马试验场空降学校进行高跳高开伞降训练。美军的头盔是越来越花哨了。

Special-operations personnel attending the Advanced Tactical Infilitration Course conduct a high-altitude, high-opening airborne operation the morning of April 6 at the Military Freefall School at Yuma Proving Ground in Yuma, Ariz.