The 13,000 member United Public Workers union and five other public and private-sector labor unions today endorsed U.S. Representative Colleen Hanabusa.  Other unions included the Hawaii Longshore Division, statewide, Hawaii Laborers Union Local 368, Hawaii Masons Union Locals 1 and 630, the Hawaii Sheet Metal workers Union Local 293, and the International Federation of Professional and Technical Engineers, Local 121.  Hanabusa is challenging U.S. Senator Brian Schatz in the 2014 Democratic primary to fill the remaining two years in the term left by U.S. Senator Daniel Inouye, who died in December.