Armacham Security Guards wear light armored vests and knee pads, and are assigned to guard Armacham Technology Corporation from outside threats. They deploy with a number of different weapons in F.E.A.R., ranging from the RPL Sub-Machinegun to the 10mm HV Penetrator. ATC Security acts under orders to cover up ATC's illicit and illegal activities, which includes silencing witnesses and killing anyone who may interfere with their objectives. In one case, this involves executing Aldus Bishop, as well as other Armacham Technology Corporation employees.