Hmm, interesting. They all have their own meshes, too? Also, what's the summon command for the shield one?
Also, I've noticed an interesting thing: In WAR-Confrontation, if you choose to be Special Ops and start at the air node, you are sometimes told to "Get the Energy Shield!" although the text says "Get the Link generator!" - I guess they didn't manage to get the original announcer for the new announcements.