180803-N-PO203-0096 PITTSBURGH (Aug. 3, 2018) Rear Adm. David Hahn, chief of naval research, tours the National Robotics Engineering Center (NREC) during a visit to Carnegie Mellon University (CMU) in Pittsburgh, Pa. Hahn was at CMU to attend the Artificial Intelligence (AI) & Autonomy for Humanitarian Assistance and Disaster Relief (HADR) workshop, co-hosted by the Office of Naval Research and CMU. (U.S. Navy photo by John F. Williams)