Originally posted by: AndrewR
I have heard that the AF is becoming less reliant on the C-5 because of its size. It can't take off from smaller airports, so it is limited in where it can go. I think the C-17 Globemaster and C-130 Hercules are the transports of choice.
Partially the size, partially the reliability. C-5s have a reputation for breaking. We've had some static C-5 displays here over the past couple years. They stand out.

I saw a guy standing next to one on the flightline the other day, and those things are just stupidly immense.
It's really the C-17 that's being favored over the C-5, not the C-130, because the Hercules is not a strategic airlifter, and the cargo capacities don't even remotely compare. C-130 has its niche, and it doesn't overlap with the C-17 or the C-5. Too bad the latest C-130, the J model, is turning out to be a big boondoggle.
That said, the C-5 is still a workhorse, and I don't think there is another military plane that can transport as much cargo.
Not in the US military inventory, but the Russian An-124 Condor certainly can.