COBRA45USAF WC-135W Constant Phoenix sniffer AC east from Hickam AFB Hawaii.
The last available trace of this is on 1012 heading se across the U.A.E and then no data until it's departure from Hawaii
The aircraft is a modified C-135B or EC-135C platform. The Constant Phoenix's modifications are primarily related to its on-board atmospheric collection suite, which allows the mission crew to detect radioactive "clouds" in real time. The aircraft is equipped with external flow-through devices to collect particulates on filter paper and a compressor system for whole air samples collected in holding spheres. The cockpit crew is from the 45th Reconnaissance Squadron at Offutt Air Force Base, Neb., and special equipment operators are assigned to Det. 1, Air Force Technical Applications Center at Offutt AFB. General Dwight D. Eisenhower commissioned the Constant Phoenix program on Sept. 16, 1947, when he charged the Army Air Forces with the overall responsibility for detecting atomic explosions anywhere in the world. In September 1949, a WB-29 flying between Alaska and Japan detected nuclear debris from Russia's first atomic test–an event thought not possible until mid-1950.
Beginning in August 1950, WB-50 aircraft were converted for the air-sampling mission over a two-year period. WC-135 aircraft began replacing the WB-50s in December 1965 and became the workhorse of the atmospheric collection program.
moar
https://www.af.mil/About-Us/Fact-Sheets/Display/Article/104494/wc-135-constant-phoenix/
09-0016 USAF C-32A continues sw from Milwaukee, WI mitchell Airport depart