This publication represents the results of a descriptive research project performed in 1989 and 1990 by Hallcrest Systems, Incorporated, of McLean, Virginia, under grant (89-IJ-CX-0002) from the National Institute of Justice, U.S. Department if Justice. The major purposes of this research project were to *profile the growth and changes in the private security industry over the past two decades; *identify emerging and continuing issues and trends in...