In 2017, it was revealed that the Ministry of Defense recently spent millions of dollars investigating reports of unidentified flying objects. This is the latest disclosure about a series of government secret UFO projects.《远古外星人 第十三季》上映地区远古外星理论:豆瓣电影评分远古外星理论:多少集大结局Ancient Aliens Series百度网盘分享地址远古外星理论:导演名单