This response proposes a revolutionary new approach to activity modeling and recognition modeling directly by treating the user interface as sequence of images and then applying appearance-based recognition techniques to that sequence of images. Thus a new rule can be defined by the end-user by simply drawing it on the user interface of the application. Benefits The proposed work will develop this new engine and incorporate it to extend Guardian SolutionsÂ’ existing rule-based activity recognition engine. The application is the next generation for intelligent management of security conditions within critical infrastructures. Keywords Human Activity, Behavior Moduling, Homeland Security, Waterside protection, Portside protection, GUI Interface