Polaski was asked to record instructions for the Ranger field training course. He was unaware that they recorded him during what he thought was rehearsal and then used that for the actual course. Due to several mistakes and flubs he made, Polaski was embarrassed and humiliated by the quality in front of his fellow Rangers and filed a formal complaint to get the recordings removed immediately.
When the Hiss invasion began, Polaski was possessed by the Hiss while in the Executive Sector. When Director Jesse Faden arrived to cleanse the Control Point in Central Executive, Polaski was one of several possessed agents that attempted to kill her but was destroyed instead.