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Overall walk-around of the F-1.

Picture 5 of 8.

Note the bracketry (between the LOX and fuel high-pressure ducts, leading from near the No. 1 fuel valve around the fuel inlet elbow and behind the interface panel, as well as running behind the fuel high-pressure duct to the gimbal outrigger attach point up toward the heat exchanger) which would be used to support the thermal insulation.

Also note the darker rectangular areas from the nozzle extension handling fixture.