So, in the world of flashbacks, is the Purge complete?

As some have indicated, what about the stations? Were those DI people eliminated, or will they eventually either be "recruited" to Other status, or hunted down and terminated?

There is also the smaller island with the animal research and zoo.

Could the DI skeletons in the cave be those who fled, and were later tracked down and killed? By the Others? By the wild animals the Others released in order to kill the DI folks?