US Air Force's 64-14831

A US Air Force WC-135R Constant Phoenix, 64-14831 (c/n 18771, l/n 723), is making a stop at HNL as ATOM31. This former KC-135R, assigned to the 45th Reconnaissance Squadron / 55th Wing, is one of three modified to detect atmospheric anomalies associated with nuclear explosions.

Prior to the modifications, 64-14831 was last assigned to the 197th Air Refueling Squadron / 161st Air Refueling Wing of the Arizona Air National Guard.