Seconds are critical to survivability of out-hospital Sudden Cardiac Arrestpatients since it A typically causes death if proper care is not administered rapidly. Use of public-access Automated External Defibrillators (AEDs) is showing promising results in decreasing collapse-to-shock times amongpatients, which is associated with improved patient outcomes. Bystander access to these medical devices ensure that the necessary care to victims is provided prior to arrival of emergency responders. Prior studies have suggested methods for deploying AEDs for public use by implementing mathematical optimization based on historic incidences of SCA. The purpose of this project was to improve upon these studies by developing a novel method for generating placement plans in urban environments. The novelty of this study is: (1) the use of route-based walking time instead of straight-line approximations; (2) introduction of temporal availability in deployed devices to account for location hours-of-operation; (3) use of a multi-objective optimization to balance decision-maker objectives; and (4) the implementation of an interactive decision-maker tool for observing effects on benefits and costs.