Defense Secretary Jim Mattis formally swears in Ryan D. McCarthy as the 33rd Under Secretary of the Army during a ceremony at the Pentagon in Washington, D.C., Sept. 5, 2017. The U.S. Senate confirmed McCarthy on Aug. 1, 2017.

Acting Secretary of the Army Ryan D. McCarthy has lunch at the dining facility with Soldiers from multiple units currently deployed to Powidz Air Base, Poland, Sept. 1, 2017. The units are deployed to support Operation Atlantic Resolve, a U.S. endeavor to fulfill commitment to NATO interests by rotating units throughout Europe.