Summary

RIO DE JANEIRO — Delta Air Lines is the nation's most profitable carrier, but its hungry rival, United Airlines , is far bigger over the Pacific. Delta's new president, Peter Carter, says that just won't stand. "We want to become stronger, better, faster in the trans-Pacific, and we want to become the leading U.S. carrier" across the Pacific, Carter told CNBC in an interview here during the International Air Transport Association's annual meeting.

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