(Mashable) A new smartphone system may help law enforcement respond faster to school shootings or other emergencies. SchoolGuard is an app with a button that, when pushed, alerts all police officers within a 20-mile radius of the school at risk.

Many school districts have police notification systems in place in case of an active shooter or other emergency situation, but in many cases, police or other responders do not get to the scene in time to prevent further casualties. A study from the Department of Homeland Security showed that while the average mass shooting lasted 12.5 minutes, the average response time was 18 minutes.

The increase in school shootings over the years prompted Nate McVicker, a police officer and co-founder of SchoolGuard, to take action. Along with Mike Snyder, a retired Illinois State Police colonel, and a few programmers, McVicker launched SchoolGuard in May of this year.

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