One engine quit.
They were headed straight for the Acropolis.
Three engines were enough.
Other than preferring to remain alive, he said he didn't want to be remembered as the American pilot who destroyed the Acropolis.
I have a PHD in Watching Aircraft Engineering Videos from the University of Youtube.
I can say quite authoritatively that there is the claim in just about every one that aircraft developed after WWII have the engineers placing at least two engines for exactly this very reason.
They claim that there are few repair garages up there.