2013年4月30日，美国佛罗里达州埃格林空军基地赫尔伯特机场，参加“翡翠勇士”2013 联合特种作战演习的美国空军 AC-130U“大力神”空中炮艇机正在起飞。该演习是美国空军特种作战司令部举行的一年一度战术演习，利用从历次实战中得到的经验训练特种部队在城市进行非常规战争。（A U.S. Air Force AC-130U Hercules aircraft takes off from Hurlburt Field, Fla., April 30, 2013, during Emerald Warrior 2013. Emerald Warrior is an annual two-week joint/combined tactical exercise sponsored by U.S. Special Operations Command designed to leverage lessons learned from operations Iraqi and Enduring Freedom to provide trained and ready forces to combatant commanders.）

2013年4月30日，美国佛罗里达州埃格林空军基地赫尔伯特机场，参加“翡翠勇士”2013 联合特种作战演习的美国空军 AC-130U“大力神”空中炮艇机正在起飞。该演习是美国空军特种作战司令部举行的一年一度战术演习，利用从历次实战中得到的经验训练特种部队在城市进行非常规战争。（A U.S. Air Force AC-130U Hercules aircraft takes off from Hurlburt Field, Fla., April 30, 2013, during Emerald Warrior 2013. Emerald Warrior is an annual two-week joint/combined tactical exercise sponsored by U.S. Special Operations Command designed to leverage lessons learned from operations Iraqi and Enduring Freedom to provide trained and ready forces to combatant commanders.）