Naval Operations. The news media reported that his death by suicide may have been caused by a Navy investigation following a story by Newsweek about Boorda wearing two "combat valor pins" on the service ribbons of his uniform, which he received for duty as a weapons officer and executive officer aboard two naval ships off the coast of Indochina during the Vietnam War. Although there were indications these "combat distinguishing devices" were authorized to be worn on his Navy Commendation Medal and Navy Achievement Medal, the Department of the Navy Board For Correction of Naval Records determined after his death that both of the devices were not authorized to be worn on the two decorations. In 2011, the Department of Defense changed its awards manual regulations concerning the Medal of Honor (MOH), specifying that the "V" device instead of the oak leaf cluster and inch star would be used to denote additional citations in the rare event of a service member being awarded a second MOH. By May 2015, the Department of Defense changed its awards manual again concerning the MOH, specifying that a separate MOH is presented to an individual for each succeeding act that justifies an award. There has not been a living repeat MOH recipient since the World War I era, so the "V" device has never actually been worn in this fashion. Until 2017, the criteria and conditions under which the "V" device could be awarded differed among the services. For the Army, the "V" was worn solely to denote "participation in acts of heroism involving conflict with an armed enemy". For the Navy, Marine Corps, and Coast Guard, the "V" could be worn to denote combat heroism, or to recognize individuals who were "exposed to personal hazard during direct participation in combat operations". For the Air Force, the "V" could be worn on the Bronze Star Medal to denote heroism in combat, but also on the Commendation Medal and Achievement Medal to denote heroism or for being "placed in harm's way" during contingency deployment operations. Prior to 1 January 2014, the device was also authorized on Outstanding Unit Awards and Organizational Excellence Awards to indicate the unit participated in direct combat support actions. The "V" device is also authorized for the Air Medal by all the services where heroism in aerial combat was involved on an individual mission. On 15 August 2016, the Coast Guard