42.9829757,-82.4012359,Damar Security Systems 35.1750898,-79.3478868,David Carter Consulting 41.0891036,-112.0256725,Davis School District 43.3908757,-79.7884119,Dealer Security Inc. 40.766312,-73.9888421,DGA Security Systems, Inc. 43.5896329,-83.9948441,Dice Corporation 34.7545821,-92.2875105,Dillard's Store Services, Inc. 29.5883323,-98.4771942,Dispatch Center, Ltd. 41.6250614,-87.7292001,DMC Security Services, Inc. 37.239126,-93.204178,DMP 43.0710549,-77.6090886,Doyle Security Systems, Inc. 39.6642836,-77.7095406,Dynamark Monitoring, Inc.