Airlines are navigating a week of major strategic shifts, with JetBlue’s CEO taking unusually direct aim at the dominance of the Big Four and calling for stronger government action to support small carriers, while American is reassuring travelers that its operations have fully stabilized following recent FAA-related disruptions. Airports, too, are in the spotlight -- Pittsburgh International has officially opened its new $1.7 billion terminal, marking one of the largest U.S. airport modernization efforts in recent years.

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