A medical worker at a Damascus hospital holds a sign protesting a suspected chemical weapons attack outside the Syrian capital a year ago. The suspected attacks led the U.S. to fire a barrage of missiles at a Syrian air base on April 7, 2017.
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Air Force HH-60 Pave Hawk helicopters shown during Exercise Angel Thunder, in Arizona's Sonoran Desert, in 2010. A Pave Hawk crashed in Iraq on Thursday, killing seven people.
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Adm. Michael Rogers, chief of the U.S. Cyber Command and director of the National Security Agency, testifies before the Senate Armed Services Committee on Tuesday.
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