In November 2016, Director Cox initiated a series of "H-grams." Inspired by the late Admiral Zumwalt’s series of Z-grams used to communicate with Sailors throughout the Navy, H-grams are an avenue by which NHHC provides significant historical context to aid today’s decision-makers. H-grams and associated attachments reflect Director Cox’s personal assessment, aided by NHHC historians, of significant events in U.S. Navy history. Each H-gram draws on archival material, historic imagery, and written and oral history.