"Psi emitters..." He almost said the word with contempt. "Psi dampeners, and heavy tech. The swarm was always hard to push back and impossible to beat. But with enough concentrated damage, it was good to hold them off.... And ..." He sighed. "We also got a long break from them after a while. They left to try and so somethings in secrecy... When they came back, they were more powerful than ever, but so were we, and the toss. Always about being one step ahead and not giving your enemy a chance to get the upper hand."