Guided-missile destroyer USS The Sullivans (DDG 68) leads a formation of ships during a trilateral exercise with Iraq and Kuwait. (U.S. Navy Photo by MC2 Lucas Askew/Released)

An A-10C Thunderbolt II, from the 75th Expeditionary Fighter Squadron, takes off in front of the Kandahar International Airport, on Kandahar Airfield, Afghanistan, Aug. 2, 2018. (U.S. Air Force photo by Staff Sgt. Kristin High)

A sailor deployed to U.S. 5th Fleet’s Task Group 52.3, left, and Egyptian Naval Force (ENF) Sailors conduct a familiarization dive during Eagle Response 18. (U.S. Navy photo/Released)

U.S. Army Gen. Joseph Votel, commander, U.S. Central Command, welcomes His Royal Highness Prince Khalid bin Salman, Ambassador of the Kingdom of Saudi Arabia, to the U.S., to MacDill Air Force Base, July 31, 2018. (U.S. Air Force photo by TSgt. Dana Flamer)

2nd Battalion, 12th Field Artillery Regiment, Alpha Battery, 2nd Platoon fires artillery in Afghanistan in support of Operation Freedom's Sentinel, July 23 2018. (U.S. Army photo by Sgt. Elliot Hughes)

U.S. Army Brig. Gen. Paul Bontrager, U.S. Central Command deputy director of operations, left, and Hillsborough County Veterans Council member Walt Raysick, right, address attendees during a Field of Honor ceremony July 14, 2018. (U.S. Air Force photo by Capt. Glenna Lambert)

Lieutenant General Carl E. Mundy, III, the new commander of United States Marine Corps Forces, Central Command addresses service members and attendees during the MARCENT change of command ceremony. (Photo by Tom Gagnier)

A U.S. Air Force F-22 Raptor receives in-flight fuel from a KC-135 Stratotanker assigned to the 28th Expeditionary Air Refueling Squadron during an aerial refueling mission in support of Operation Inherent Resolve over Iraq, July 6, 2018. (U.S. Air Force photo by Staff Sgt. Keith James)

Iraqi Security Forces fire at known ISIS locations near the Iraqi-Syrian border using an M109A6 Paladin Self-Propelled Howitzer, June 8, 2018. (U.S. Army photo by Spc. Anthony Zendejas IV)