Jill Carroll, the US journalist held hostage for 82 days in Iraq, returned to the United States on Sunday aboard a commercial flight to Boston, saying "I feel like I'm alive again." The 28-year-old was accompanied on the Lufthansa flight by a colleague from her employer, the Boston-based Christian Science Monitor, which posted a news story about her return on its Web site two hours after her flight landed. Carroll has been kept out of view of other reporters. \ "I finally feel like I am alive again. I feel so good," Carroll said Sunday, according to the newspaper. "To be able to step outside anytime, to feel the sun directly on your face - to see the whole sky. These are luxuries that we just don't appreciate every day."