Under the truck in the frame rail(drivers seat area), is the fuel filter, $10 part, if you have noticed a drop in power at highway speeds recently then filter was probably getting full of debris, and now is completely clogged.
A filter rarely clogs "overnight", there would be warning signs.
And speaking of warning signs, have there been any?
Or has any recent work been done on the vehicle?
Did you just come out one morning and it had this 30-60 second issue, or did it happen first when engine was warm?
On the fuel rail passenger side top front of the engine you will see the Fuel Pressure Regulator(FPR), it is connected to the fuel rail and has a fuel line connected to it and a vacuum line, remove this vacuum line and see if there is fuel in it, there shouldn't be, if there is replace FPR
If there is no fuel seen or smelled, leave vacuum disconnected and try to start engine.
If engine stays running the FPR is probably bad, stuck wide open so fuel system can't build any pressure.
Ford only primes the fuel system for 2 seconds when key is first turned on.
So when you turn the key on listen for the fuel pump, it is loud enough to hear in the cab.
Now turn key off and then on again, repeat this 2 more times.
What you are doing is building pressure in the fuel system, it should be 35-40psi, you can't over-pressurize the system.
Now try to start engine and see how long it will run, if it runs for a few minutes and then dies the check valve in the fuel pump is most likely issue.
You can rent a fuel pressure gauge and test fuel pressure.
I assume opening the throttle a little when engine does start doesn't keep it running, but can you get the RPMs up by doing that?