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On 13 and 14 May 2014, a team from the University of Washington conducted a set of measurements of the underwater sound generated by explosive charges as part of a naval training event conducted in the Silver Strand Training Complex off San Diego. Environmental measurements to support the acoustic research included measurements of sound speed versus depth showing a thermocline, and sea surface directional wave measurements. This team was joined by personnel from U.S. Pacific Fleet and HDR Inc., who conducted simultaneous observations of marine mammals.