Tracking down the three Essence of Aether samples is one of the many missions you'll find yourself undertaking in Act Two of Modern Warfare 3's zombie mode. While the game does give you a location name where you can find each sample, that's not much to go on in a map as expansive as the Exclusion Zone.
If you're still in Act One of MWZ, you'll have to destroy a Mercenary Convoy, gather some Cyphered Tablets, and jump through all sorts of other hoops before you get to this. But for those ready to go sample hunting, here are all three Essence of Aether container locations.
