Facts on the ground:  Parents received flight information on SATURDAY AFTERNOON from their Stake Presidents.  The Church directive on airport protocol was not sent via email to parents (like they did for quarantine procedures).  I didn't even know about it until AFTER the planes have landed in SLC on SUNDAY AFTERNOON.  It is very possible, if not unavoidable, that some parents did not receive the directive. Other parents - if they are like me - will take their entire family to meet the miss