Windows ÿ Roof-sky lights ÿ Properties with alarm systems should not be ignored ÿ Indications of breaking and entering ÿ Lights off that usually are not ÿ Broken glass, particularly over latches ÿ Ladders against building ÿ Vehicles parking on residential street adjoining businesses ÿ Noise ÿ Concentration upon rear/obscured entrances ÿ Establishing field contacts ÿ Talking to various people ÿ Custodians ÿ Delivery persons - vendors ÿ Listening to people ÿ Avoid interrupting ÿ Allow them to give opinions ÿ Show interest ÿ Explain how the employee can help (i.e., crime prevention) ÿ Differences in purpose of conspicuous versus inconspicuous patrol ÿ Conspicuous - high visibility, create the illusion of an omnipresence ÿ Inconspicuous - detection/apprehension