By Guy Taylor “The eyes of the world are on us,” Boeing’s chief executive Dave Calhoun said on Monday, as the embattled planemaker announced that he, along with many of the firm’s C-suite executives, would be stepping down as part of its largest management reshuffle in years. The unprecedented move comes as Boeing grapples with one of the biggest crises in its history, which was sparked in January after an emergency exit door fell off an Alaska Airlines flight midair. Multiple Boeing planes have since been grounded, and the firm is now under scrutiny from regulators, the US Department of Justi…