Command Post Sigma is a Replica Forces outpost that appears in F.E.A.R. 2: Reborn. It is where Foxtrot 813 and various other Replicas gather to await orders from Replica Command. The post is located in the city of Fairport. It is a small room inside of an abandoned Armacham Technology Corporation facility, possibly even the company's headquarters. Replicas guard the post in large numbers, ensuring that Armacham Technology Corporation Forces don't take them by surprise.