Senator Daniel Inouye, a Democrat from Hawaii, died on Monday afternoon at age 88. Inouye had been hospitalized since early in December with respiratory problems, and died from respiratory complications. According to his Senate staff, his last word was “Aloha.” Inouye had served in the Senate for 50 years, since 1963, and was the longest-serving senator at the time of his death. Inouye was also the second longest-serving senator in U.S. history, after Robert Byrd. Inouye lost his right arm in World War II, and was later awarded the Bronze Star Medal of Honor.