Inouye's wife, Maggie, waves to a neighbor as she, the senator and son Kenny prepare to leave their home, Aug. 4, 1973, in Bethesda, Md.
Credit Bill Weems / AP
In this Jan. 9, 1963, file photo, Daniel Inouye takes the Oath of Office as Democratic senator from Hawaii from Vice President Lyndon Johnson in a re-enactment of the swearing in ceremony in Washington, D.C.
Inouye and Sen. John M. Montoya, D-N.M., are shown during the Watergate Senate hearings on Capitol Hill, Aug. 2, 1973.
President Clinton presents the Medal of Honor to Inouye, one of 22 Asian-American soldiers receiving the Medal of Honor for service in World War II, June 21, 2000, at the White House in Washington.
Credit Joe Marquette / AP
U.S. Rep.-elect Daniel K. Inouye of Hawaii and his wife, Margaret, wave as they arrive at Friendship Airport in Washington, D.C., Aug. 9, 1959.
Seeking the U.S. Senate seat from Hawaii is Democrat Daniel K. Inouye, shown in this 1962 photo.
Inouye, escorted by Army Gen. Charles Taylor, inspects the troops outside the Pentagon during the annual National POW/MIA Recognition Day ceremony Sept. 14, 2004. Inouye lost his arm in World War II combat.
Credit Matthew Cavanaugh / Getty Images
Secretary of the Army John McHugh greets Inouye before a hearing of the Senate Appropriations Committee March 21 in Washington, D.C.
Credit Win McNamee / Getty Images
Senate Appropriations Committee Defense Subcommittee Chairman Daniel Inouye delivers an opening statement during a hearing on the proposed Army budget estimates for fiscal year 2012 on Capitol Hill, May 18, 2011.
Hawaii Democrat Daniel Inouye, the Senate's senior member, died at a Bethesda, Md., hospital Monday. He was 88 years old and was suffering from a respiratory ailment. The Japanese-American was known for his heroism in World War II and for breaking racial barriers.
Born to Japanese immigrants in Hawaii in 1924, the young Inouye dreamed of becoming a surgeon, but world events intervened as he was listening to the radio on Sunday morning, Dec. 7, 1941.