@neetintel reports at least five US Navy E-6B Mercury "doomsday planes" airborne simultaneously over the US during Global Thunder 27, a routine annual USSTRATCOM nuclear command-and-control exercise that started October 22, 2026.
E-6Bs perform the TACAMO mission to relay VLF signals to submerged ballistic missile submarines and serve as Looking Glass airborne command posts capable of issuing launch orders to ICBMs and bombers if ground systems fail.
The exercise involves the full nuclear triad and increased aircraft activity for training purposes; the poster notes unusually low traffic on primary HFGCS frequencies despite the visible air activity.
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