An Iraqi soldier mans a machine gun pointed toward enemy positions on the Tigris River in Mosul, Iraq, Jan. 25, 2017. (Seth Robson/Stars and Stripes)

Kabul University students talk before the start of a concert at the U.S. Embassy. They performed with fellow students and instructors and the U.S. Forces Afghanistan Band, Thursday, Jan. 26, 2017. (E.B. Boyd/Stars and Stripes)

Members of the Marine Security Guard detachment in Kabul, Afghanistan, stand in front of a memorial to other Marines and Navy corpsmen who have died in Afghanistan since 2001, Thursday, March 2, 2017. From left, Sgt. Nelson Moreno, Sgt. Bryan Barden, Gunnery Sgt. Christopher Tari, Sgt. Layton Nobles, Sgt. Zachary Phillips, Sgt. Joel Ream, Sgt. Owen Nardini and Sgt. Christopher Vincent. (Phillip Walter Welllman/Stars and Stripes )

A child stands in front of a driveway gate at a home in the al-Dandan neighborhood of Mosul, Iraq, on Wednesday, March 8, 2017. The red circle on the wall marked the house as having a covered driveway suitable for concealing an Islamic State car bomb, residents say. (Chad Garland/Stars and Stripes)

Afghan cadets march at a training area near Camp Qargah on Thursday, March 9, 2017, before graduating to become Afghan army officers. (PHILLIP WALTER WELLMAN/STARS AND STRIPES)

Yasiv, 11, wounded in an apparent chemical attack in east Mosul in early March, recuperates in a hospital bed at an emergency hospital in Irbil, the capital of Iraq's autonomous Kurdish region, on Saturday, March 11, 2017. (Chad Garland/Stars and Stripes)

Airmen of the 370th Air Expeditionary Advisory Group detachment gather around a fire pit on makeshift pallet furniture, March 17, 2017. The conditions are austere at the base, but units make do with what they have, officials said. (Chad Garland/Stars and Stripes)

A rocket is launched from a High Mobility Artillery Rocket System on Qayara Airfield West, Iraq, toward Islamic State targets roughly 40 miles away in Mosul, March 17, 2017. (Chad Garland/Stars and Stripes)

Staff Sgt. Carlos Borges, a crew chief with the 5th Expeditionary Air Mobility Squadron directs fellow airmen placing a new C-17 Globemaster III tire on the jet during a tire change at an undisclosed location in Southwest Asia on Tuesday, March 21, 2017. (Chris Church/Stars and Stripes)

A woman receives the eucharist during Palm Sunday Mass at the Church of the Immaculate Conception in Qaraqosh on March 9, 2017, while a child in a traditional outfit looks on. Former residents of the town, forced to fee when Islamic State militants advanced in August 2014, returned briefly to mark the holy day, but few have returned permanently since it was freed from ISIS in October 2016. (Chad Garland/Stars and Stripes)

A flight deck crew member watches to ensure the catapult moves into the correct position to launch an aircraft off the flight deck of the aircraft carrier USS George H.W. Bush in the Persian Gulf April 19, 2017. (Chris Church/Stars and Stripes)

Senior Airman Ryan Berry, 26, of Bedford, Texas, waves a pallet onto a C-130J at Camp Dwyer, Afghanistan, May 5, 2017. Because Dwyer is less secure than Bagram or Kandahar, Berry must keep his body armor and helmet on when unloading and loading cargo. (E.B. Boyd/Stars and Stripes)

Airman recruit Nick Vo performs the incline chest press while working out during a deployment in the Persian Gulf, April 19, 2017. (Chris Church/Stars and Stripes)

A family searches for what's left of their home near the ruins of the Great Mosque of al-Nuri in Mosul's Old City on Thursday, July 20, 2017. (SETH ROBSON/STARS AND STRIPES )

A Paladin self-propelled 155mm Howitzer sits on the firing line near Tal Afar in northern Iraq on Sunday, Aug. 27, 2017. Gun crews were preparing to move to a new location to support Iraqi units fighting the Islamic State. (Chad Garland/Stars and Stripes)

Discarded shoes outside the Imam Zaman mosque in Kabul, Afghanistan, on Saturday, Oct. 21, 2017. An Islamic State suicide bomber attacked the mosque on Friday, killing at least 39 people and injuring over 40 others. (Phillip Walter Wellman/Stars and Stripes)

An Afghan trainee UH-60 pilot performs a pre-flight check on his aircraft at Kandahar Air Field before practicing maneuvers on Sunday, Nov. 5, 2017. (PHILLIP WALTER WELLMAN/STARS AND STRIPES )