This report discusses US private security services for the years 2006 and 2011, with forecasts to 2016. Topics covered include public safety environment, service type and market segmentation, technological environment, regulatory environment, market environment, service type and market forecasts, industry composition, and leading participants. Service types include guarding services, alarm monitoring services, private investigations, and other services; market segments cover nonresidential and residential. This 23 page report also includes a highlights summary and a resources section.