For those who are unfamiliar, an emergency call is set up between party A and a third part to call at a prescribed time. This gives party A an excuse, if necessary or desired, to claim some emergency has befallen the third party of a sort only party A can assist with. If things are going well, though, party A can let the caller know an intervention is unnecessary and continue on with the outing.

Hindsight is always 20/20 eh? And you can actually just set an alarm on your phone and simulate the call. If things are going well you say, damn who f***ed with my phone alarm?
See, now, that is a level of deviousness, uh… preparedness! I wasn’t even aware of!