  We consider expanding vacuum spacetimes with a CMC foliation by compact
spacelike hypersurfaces. Under scale invariant a priori geometric bounds
(type-III), we show that there are arbitrarily large future time intervals that
are modelled by a flat spacetime or a Kasner spacetime. We give related results
for a class of expanding vacuum spacetimes that do not satisfy the a priori
bounds (type-II).
