Commercial and industrial facilities, as well as the individuals who work there, benefit from security equipment and supplies. To direct traffic and restrict access to certain areas of a facility, access barriers and crowd-control products are utilized. Workers can communicate and listen to each other on the job site using two-way radios, police scanners, walkie-talkies, and vessel automatic identification systems. Valuables are protected from theft and damage with locks and safes. Security alarms and warnings are used to alert employees in the case of an emergency or to prevent theft and destruction of a business's assets.