CASI (Call All Stations Immediately) is a free mobile app that allows you to send a text message with a simple button to alert all nearby emergency response agencies that you’re in trouble.

Your text message will go through a quality-check process to ensure that the nearest available responder can respond quickly enough to help you.

You will be notified of the nearest available responder by the time the message is received.

The app also helps you to quickly alert the closest available responder to your location, making it easier for you to receive help when you need it most.