[zamalek]

The hard part is the freezing. You need to prevent water crystals from forming (which will rupture cells), and the freeze has to happen really quickly. This is why some insects can tolerate being frozen, they are small enough to freeze quickly.

Reanimation is the easy part (relatively speaking), even though we have no clue as to how to do it.

We don't have the technology to do this to humans yet, so chances are high that none of them are viable.