Actually that is the inside of a C-17. Many hours in the air as a passenger on those. Just flew back and forth to Charleston SC on one this weekend. C5's are MUCH bigger in side. The C17 only has room for one row of pallets down the middle. The C5 has room for two buses side by side and two in a row. Plus cargo compartment of a C5 doesn't have a "wall" at either end. It opens at the front and rear for RO/RO. Passenger compartment is above the cargo area, it has app. 73 seats if I remember correctly.
NGH