Provided is a method for designing, managing and executing emergency response plans. Specific plan and resources are defined and a defined plan is executed either automatically or manually according to pre-determined or "real-time" parameter definitions. An executed plan notifies, by various user-defined means, actively or pre-defined parties in a near simultaneous fashion of security communications, notifications, directives and/or information. One embodiment of the system includes a component that requires a notified party to acknowledge a particular notification event by responding with a personal identification number (PIN) or calling a specified telephone number and entering the PIN. The system enables parties to be organized into groups based upon member profiles. Individual parties can be assigned to sub-groups, enabling specifically designed communications to go to the parties of any particular sub-group. Alternative means of contact can be prioritized and utilized either simultaneously or sequentially until contact with a particular party is achieved.