Create a video of a person performing CPR on a training mannequin in a first aid training setting. The person should be wearing blue medical gloves and demonstrating proper chest compression technique, pressing firmly on the mannequin’s chest. The mannequin should look realistic, with a human-like head and torso. The background should resemble a classroom or training facility, with appropriate medical training equipment and accessories visible. Include clear instructions or annotations highlighting the key steps of CPR, such as the correct hand positioning and compression depth and rhythm. The video should emphasize the importance of CPR in emergency situations, showcasing its life-saving potential.