The mission concept envisions take-off from US bases, dispersal in equitorial latitudes, changes of "ocean sitting" positions during the holding portion of the mission, and return to base on a dogleg in Hawaiian latitudes.
Coverage of Northern Hemisphere target areas is possible from latitude 30 degrees north and launch points are available in a vast area remote from simple surveillance.
Source: Anon. Liquid Hydrogen Fueled Aircraft The Boeing Company January 1, 1973
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