Ask HN: Dead Man Switch / Emergency Drill UX Best Practice?

I'm working on an emergency / dead man switch type app & am wondering if I should hold "drills" or not.

Scenario: User A activates switch on his mobile phone, if not de-activated before time Z, User B (Guardian) gets notified that User A may be in an emergency.

Use Case: high risk sports, activists, etc ...

My Question: Should User B (the Guardian) receive emergency drills to score responsiveness or will this lead to fatigue and ignoring the real signals?