This will depend on your level of KATANA Safety support.
Your Circle is one of the three layers of Defense with KATANA Safety. It along with the KATANA Safety Arc (Purchase here) and the KATANA Safety Response Center (purchase a subscription in your app) work to provide a peace of mind that lets you better enjoy your opportunities.
Those with a subscription to the Response Center, after triggering an alert, will receive a call from a KATANA Safety Response Center operator. These professionally trained individuals will attempt to get in touch with you to determine your situation and offer assistance. If they are unable to reach you (three call attempts), they WILL notify your circle. If they are able to reach you and you're in an emergency, they will ask if you want your circle notified.
For those who do not have a subscription to the KATANA Safety Response Center, when an alert is triggered, your circle will be notified via text messages and phone calls.