AN/TPS-75 radar to be replaced
In this file photo, a AN/TPS-75 radar rests on the back of a transport vehicle at the Alpena Combat Readiness Training Center, Mich., July 29, 2015. The AN/TPS-75 radar is capable of providing coverage of more than 200 nautical miles in every direction and detecting aircraft as high as 95,000 ft. Following release of a contract award May 11, 2017, the radar, dating to the Vietnam War era and containing vacuum tube technology, will be replaced by Raytheon Co.-built three dimensional expeditionary long-range radars by 2028. (U.S. Air National Guard file photo/Senior Airman Ryan Zeski)

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Photo by: Senior Airman Ryan Zeski |  VIRIN: 150729-Z-FN720-011.JPG