Aviation

Mount Hood towers over Portland's North Harbor on the Columbia River as aircraft depart from nearby Portland International Airport during golden hour.
Delta aircraft await their next departure at JFK International Airport during the golden hour transition from day to night.
A KC-135 Stratotanker of the 336th Air Refueling Squadron assigned to March Air Reserve Base passes overhead, its four podded engines and boom refueling system identifying it as one of the U.S. Air Force's workhorses of aerial refueling — a design that has been flying continuously since 1957.
Travelers pass through "The Sky's the Limit" art installation in the underground tunnel at Chicago O'Hare International Airport.