"Despite Accidents, Injuries are predictable and preventable". Cardiovascular events are categorized as common sudden death causes in almost every epidemiological study worldwide, which concerns everybody's preparation and readiness to overcome these issues in the scene of accident. This study was designed as a descriptive cross-sectional one to assess familiarity of an army-clinic personnel with new changes and updates of the latest resuscitation guidelines. For this purpose, a questionnaire was prepared with 14 technical questions and two surveys about personnel assurances with their own and their coworkers' preparedness in the field of accident. Analysis of the returnee data from participants showed weakness and improper familiarity of personnel with new AHA-BLS 2015 guidelines; It's also necessary to be mentioned unfamiliarity seems to be more evident in the seniors' responses, while they were more confident about themselves despite juniors. Which could be a necessary recommendation of Continuous Medical Education (CME) for the personnel. Awareness of Basic Life Support (BLS) and Cardio-Pulmonary Resuscitation (CPR) techniques should be managed as one of the must-to-know topics in any educational and civil defense program, especially in a real continuous method to lower the mortality and morbidity of the accidents by using the power and ability of empowered, knowledgeable and up-to-dated bystanders.