>> i could feel him tugging at my gun. u pushed him down, that's when we got outside. >> outside and partially out of view of the cameras, officer campbell and the suspect continue to struggle. >> got, like, my knees and my torso and everything on his body. he's flailing. he's got his hands on my holster. >> within seconds, two employees rush to his aid. >> they were able to grab him by the legs, help me get control of him. >> when police backup arrives, another officer helps cuff the suspect. 55-year-old donald cotton. cotton is later charged with robbery, aggravated robbery, and assault on an officer. he is sentenced to two four-year terms to be served concurrently. for officer campbell, walking in on a robbery is one surprise for the storybooks. >> the crazier thing about it is i thought he saw me and yet he still went ahead and decided to