We did this in the late 70s just for a temporary relocation. We used cranes to get them on board. We also brought back a ton of motorcycles from a deployment that included Japan, along with stereos, tvs, etc. Nothing at all unusual about this.
Before the PC culture many SAC bombers came home to the US with motorcycles and small cars in the bomb bays. The old B-36s could carry some full-sized vehicles.