Photographer's notes: "Detail of highline crane system used as the main way to deliver materials for construction of the bridge, April 30, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "View from the Nevada side arch foundation looking across toward Arizona, evening, May 20, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "View from the Arizona side of arch construction with workers arriving via highline crane and manbasket, July 1, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "On the end of the Nevada arch segment, ironworkers prepared formwork prior to pouring the next concrete section, July 1, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "On the end of the Nevada arch segment, ironworkers prepared formwork prior to pouring the next concrete section, July 1, 2009." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Photographer's notes: "While the bridge was substantially complete, the roadways leading to the bridge on both sides awaited completion, July 31, 2010." Site Name: Mike O'Callaghan-Pat Tillman Memorial Bridge
Desert Inn owner Wilbur Clark, with an arm extended in a welcoming gesture, stands in front of the neon sign at the Desert Inn in Las Vegas, Nevada. Site Name: Desert Inn (Las Vegas, Nev.)
U.S. Air Force Thunderbirds (the Air Force's aerial demonstration team) pilots stand by their planes on the tarmac at Nellis Air Force Base, Nevada. Site Name: Nellis Air Force Base (Nev.)
U.S. Air force airmen, wearing protective clothing and masks, checking chemicals during war games at Nellis Air Force Base, Nevada. Site Name: Nellis Air Force Base (Nev.)
Military personnel inspect a British Jaguar aircraft at Nellis Air Force Base, Nevada. The plane is being tested to see how it functions in the desert. Site Name: Nellis Air Force Base (Nev.)