A rocket is fired during joint Jordan-US maneuvers as they take part in the "Eager Lion" military exercises in Mudawwara, near the border with Saudi Arabia, on May 18, 2015. The annual "Eager Lion" exercises includes the participation of 10,000 troops from at least 18 countries, and incorporates scenarios including disaster relief and air defense. AFP PHOTO / KHALIL MAZRAAWI (Photo credit should read KHALIL MAZRAAWI/AFP/Getty Images)