So the Cabal must have a massive world ending ship stored somewhere. Why don't they use it. This game hardly seems like a war against alien forces at all. The covenant had all their big arse ships and their banshees. Sure the Fallen have a few massive ships. The Hive have seeders. The cabal... They have broken turrets and crappy defences, despite being "highly militarised" They run around in their "exclusion zone" not in cover or using their bunkers or anything. The only bit of heavy ordinance they have is Valus "valentine" Tu'aurc.