Members of the Jordanian 77th Marines Battalion advance to clear a room during a military operation in urban terrain tactics exercise in Al Quweyrah, Jordan, May 16, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability. - Members of the Jordanian 77th Marines Battalion advance to clear a room during a military operation in urban terrain tactics exercise in Al Quweyrah, Jordan, May 16, 2016. Eager Lion is a recurring exercise between partner nations designed to strengthen military-to-military relationships, increase interoperability, and enhance regional security and stability.