Concord Fire Department is mourning the loss of Engineer Chris Hartsell, who passed away recently after serving the community since 2002.
Interesting Engineering on MSN10h
China tests new Mach 4 turbojet engine, could be used in PLA spy planesChinese scientists have tested a turbojet engine, capable of touching Mach 4 speeds, sparking rumors of a new SR-71-like spy plane.
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