Abu Dhabi?s Etihad Airways rebuts unfair competition charges DUBAI, United Arab Emirates — Etihad Airways, the United Arab Emirates' national carrier, has formally submitted a document to the United States government rebutting allegations by U.S. carriers that it receives unfair subsidies.The airline, owned by the oil-rich Emirati capital of Abu Dhabi, an**unced the filing Tuesday. It is its most comprehensive response yet to an American carriers' effort to pressure Washington to renegotiate agreements that allow airlines from Qatar and the UAE to fly to the U.S.U.S. airlines have criticized Etihad and rivals Qatar Airways and Dubai-based...