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U.S. forces are seen at the Kurdish People's Protection Units (YPG) headquarters after it was hit by Turkish airstrikes in Mount Karachok near Malikiya, Syria, April 25, 2017.
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A U.S army soldier stands guard next to an armored vehicle as Brett McGurk, U.S. envoy to the coalition against Islamic State, visits the town of Tabqa. June 2017.
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Kurdish fighters from the People's Protection Units (YPG) chat with members of U.S. forces in the Syrian town of Darbasiya next to the Turkish border, April 29, 2017.
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A U.S military convoy is seen on the main road in Raqqa.
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A U.S military demining vehicle leads a convoy on the main road in Raqqa.