WHere are the last two strongboxes in the Soviet Installment?

[Tyler McRae]

I've gotten every Strongbox that appears on the map, but there appear to be two strongboxes that I don't have yet. Anybody have any help? I've just made it to the area past the Soviet Installment, and fast-traveled back. Help?

[mpd1958]

Hard to say since we don't know which ones you have found. If they're not showing on your map then you have yet to find the document or other object that points to thier location. I keep having the same problem with survival caches.

[Tyler McRae]

Turns out, the two I need to get only can be achieved much later in the game, one by returning from another area, and the other after getting "Broadhead Arrows"