Newly installed Sen. George LeMieux (R-Fla.) is expected to announce this week that he will serve on the Armed Services, Commerce, Science and Transportation, and Aging committees, an aide confirmed Monday. Two of three of the committee assignments, which will be formally announced Tuesday, were also held by Sen. Mel Martinez (R-Fla.), whom LeMieux replaced. Martinez, who retired with just more than a year to go in his first term, held seats on Armed Services; Commerce; and Banking, Housing and Urban Affairs committees. He was ranking member of the Aging Committee. LeMieux, who was sworn in on Sept. 10, was tapped by his former boss, Florida Gov. Charlie Crist (R), to replace Martinez. LeMieux has said he will not run for a full term next year. Crist, meanwhile, is seeking his party’s nomination for the seat.