Over the next three years, Garrus became more and more fed up with C-Sec. The rule and protocol revision that he had been told about by Pallin actually resulted in more restrictions on what officers could and couldn't do to witnesses, suspects, and citizens. Garrus was inclined to make a difference and combat crime, but with Pallin becoming more and more focused on impressing the council with crime reports and charts that seemed to show crime was decreasing (but in reality, It was increasing on the wards, the charts were only relatively compared to the likes of areas of the Citadel with lower crime rates than the wards), Garrus was frustrated with himself and C-Sec.
After Garrus had stopped Vrack (which would later on become the biggest arrest, and ultimately, highlight, of his C-Sec career), he was confined to desk work for two straight months. Pallin had praised him for taking the krogan alive, but continued to attempt to correct Garrus on just about everything else. Somehow, Pallin had persuaded Chellick into believing the protocol was for the better good, and Garrus slowly drifted away from his long time friend.
Refusing to give into believing that he should stop and try to remember 'Section XI: Standard Weapon Usage Guides' from the C-Sec Codex and Guide, Garrus had seen exactly two firefights over the next three years with C-Sec. It wasn't the violence that Garrus was craving, it was the feeling that he knew he was making a difference. After all, it was hard for him to believe a daily report summarizing the happenings on the wards was protecting the citizen three kilometers away from being blown away by a mentally insane human. It just didn't add up in Garrus's mind.
After protocol had stopped him from stopping a criminal known as Dr. Saleon, Garrus was heavily considering leaving C-Sec for another law enforcement job on another planet, or even in another system. The job was definitely taking its toll on him, and the added stress of not being able to shoot a criminal who had a hostage because of regulations bullshit was driving him insane.
But all this changed when a turian spectre went rogue, and Garrus met a certain Commander who would take him into his crew….