Tracks for the Skylink train lead away from a terminal at DFW International Airport, Texas.
Visitation stones atop a Jewish aviator’s grave at the Royal Air Force Cemetery at Oakland Memorial Park in Terrell, Texas. The RAF Cemetery holds the remains of 20 aviators who died while training at the nearby No. 1 British Flying Training School during World War II.
A maintenance stairway wraps around a support column for the Skylink train at DFW International Airport, Texas.
Railcars of the White Pass & Yukon Route Railway on a wet, misty morning in Skagway, Alaska.
Detail of a wheel on an old borax-hauling wagon train on display at the Harmony Borax Works in California’s Death Valley National Park.