"Teacherjh" wrote in message
...

It happens by arriving at your destination. If you didn't arrive at your
destination a search would be initiated. Because you did arrive nothing
needs to be done.


By arriving... by when?


By the time forwarded to the tower.



I ask because until you have arrived, you haven't arrived.


That's deep.



Action is triggered by action, not by inaction.


Not in this case.



So, if inaction (not arriving) is the cause, then the proximate cause
must be something like a timer going off.


Why?



It is this detail I'm looking for.


There is no more detail.