The player encountered live Sprawl security officers in Chapter 1 and Chapter 13. Among the survivors was Sergeant Gabe Weller, who deserted and disobeyed Tiedemann's orders in order to save his wife's life.

With the Sector's destruction, it was assumed that most of the security personnel were killed however, as evacuations saw success in the early stages of the outbreak, small numbers of security personnel may have escaped along with civilians. Throughout the course of the game, it was hinted that the security force was attempting to control the Necromorph outbreak with extremely limited success. As there were only 200 armed personnel left with Director Tiedemann in the Government Sector by the end of the game, it could be assumed that a vast majority of the Security Enforcement Guard was killed prior to the governmental evacuation. The only direct encounters that Isaac had with live security personnel ultimately resulted in Security Enforcement Guard casualties. Although there was a standing order to kill Isaac on sight, the severity of the Necromorph outbreak took its toll. The security force was ultimately unable to carry out this order directly due to a lack of resources and/or manpower, instead resorting to impeding Isaac's progress or attempting to kill him with limited targeted strikes via gunships or other means. Interaction between Isaac Clarke and officers of the Security Enforcement Guard was extremely limited with most of the security personnel encountered dead or near death.

Dead space 2 security suit anmatied