Training for active shooter situations advises turning off cell phones to keep you from becoming a target for the shooter. In these terrifying situations, phones are a lifeline. From this, SOS Safe On Scene was born. It is an app that turns off the phone's notifications, sounds, and, if needed, backlight. At the same time, it messages 911 and contacts the user has selected. We are developing real-world solutions to help save lives. Next up is a total incident management system for schools.