Commander, these alien crystals are giving us information vital to the war effort. Continue collecting them.
Commander, we are detecting a crystal near the ruins on the opposite side of the sector. It is near the frozen lake. Retrieve it, but be careful. Also if you find any helicopter pads, report their positions to us so that we can send a drop-ship to pick you up. We have one drop-ship available but we cannot land it near your base due to the ruins blocking the way.
Good luck Commander and if you happen to come across the convoy that is heading to the frozen lake, give them a wave.
