Logan Delp ground photo of Rivet Amber

Rivet Amber's bulky radar array, to the rear of the cockpit where the fuselage is discolored, made it unique — and much more expensive — than other Air Force RC-135 reconnaissance aircraft. 

Rivet Amber takeoff photo

Rivet Amber on takeoff.

Rivet Amber path

Rivet Amber was traveling from Shemya, near the western tip of the Aleutian Islands, back to Eielson Air Force Base near Fairbanks, Alaska, on June 5, 1969, when it disappeared, apparently over the Bering Sea. It is believed that the plane, traces of which were never found, lost its tail.

T. Sgt. Donald Wonders and parents

Tech. Sgt. Donald Wonders, right, a maintenance technician aboard the fatal Rivet Amber flight, with his parents.

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Kingdon Hawes points out Shemya on a globe on Wednesday.