Houston’s political winds usher in a new captain to helm the city’s bustling airports. Mayor John Whitmire named Jim Szczesniak as the interim head of the Houston Airport System on Friday, booting out Mario Diaz, who’s managed the terminals for over a decade, a statement from the mayor’s office confirmed. With a decisive chop, Whitmire continues his campaign of shaking up the city’s department bigwigs, a move he’s made his brand since taking office.