Maj. Gen. Darryl Burke, left, Air Force District of Washington commander, greets Lt. Gen. Hamad Muhammed Thani Al Rumaithi, right, chief of staff of the United Arab Emirates’ Armed Forces, during the Chief of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The conference is held annually and brought together senior military leaders from 50 countries to meet and discuss mutual security challenges, improve joint relationships and foster security cooperation. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)

Maj. Gen. Mahmoud Freihat, center, Jordan’s chairman of Joint Chief of Staff, attends the Chief of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The conference brought together senior military members form around the world to discuss mutual security challenges, improve joint relationships and foster security cooperation. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)

Gen. Marc Compernol, Belgium’s Chief of Defense, salutes as he enters the CHOD Conference on Joint Base Andrews, Md., Oct. 17, 2016. Compernol is one of 50 senior military leaders attending the annual conference to discuss mutual security challenges and improve joint relationships. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)

Gen. Pierre de Villiers, France’s chief of Defense Staff, attends the Chief of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The conference is held annually for senior military leaders to meet and discuss national security and foreign relationships. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)

Senior military leaders from 50 countries pose for a group photo during the Chiefs of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The conference is an annual event where CHODs come together to discuss important global matters. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)

United States Marine Gen. Joseph Dunford, U.S. chairman of the Joint Chiefs of Staff, makes opening remarks during the Chief of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The conference had 50 senior military leaders meet and share safety challenges, relation improvements and nurture security collaborations. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)

Senior military members from around the world gather together during the Chiefs of Defense Conference on Joint Base Andrews, Md., Oct. 17, 2016. The annual event has CHODs from different nations rally and talk about significant topics such as security and relationships. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)