While gunshots and energy discharge sounded in the distance, Sigma was close to deciphering the purpose of the Vex pattern he had been observing. "Hmm... What if I..." Using his own Arc energy as a catalyst, he delivered pulses to key points in the pattern. After the 9th pulse, the pattern began to glow brighter and seemed to expand. Within seconds, it had expanded into a map of the local Vex ruins! Sigma briefly wondered why the Vex would need a map, before coming to the conclusion that the disconnected free Vex may have used it at one point early on. "Clever," he said, with a tone that only hinted at the admiration he held. He had heard Seraphim-6 speaking with the group of free Vex earlier, but he had heard of these free Vex before, in scattered texts and , more recently, a treaty with the Last City. He knew little else about them, however, but he figured they could be useful allies. Anyway, back to business. He examined this map and noticed some oddities. There were differently colored points on the map indicating a few things. Blue dots seemed to correspond to Vex portals, red dots denote hostile Vex, Fallen or Taken, and green dots represent allies. The green dots on this map were somewhere off in the Vex ruins, seemingly in trouble as the red dots began to close in on them. "I guess that's what the gunshots are about," he concluded, deciding to go and help. Suddenly, one of the blue dots nearest to these allies began to glow brighter than before. "Maybe if I touch it?" he pondered, but as his palm came into contact with it, he was teleported instantaneously to the portal in question. This meant that he was in the middle of a battleground. "Well, how convenient."