"Somebody's watching me," is a song but also a service, thanks to Command Security. The company provides security guards for commercial, governmental, financial, and industrial clients. About half of Command Security's business comes from its aviation services. Although passenger screening services have been taken over by the US government, Command Security manages support services such as aircraft and baggage-related security duties, and skycap and wheelchair escort services. In addition to general security tasks, the company offers recruiting, hiring, training, and supervisory assistance of operating personnel. Federal Express, the company's most significant customer, accounts for over 20% of total sales.