Mason's call arrived in Hyrum while he was working at the oil fields of North Dakota. Being the respectful parents that we are, we didn't open it. Instead, we placed it in the safe care of the US Postal system, where it immediately got lost in the mail. After a waiting several days to have the time to leave work and a 5 hour trip to the PO Box to get his call, Mason discovered it's absence. The Bishop contacted SLC and had a new call sent. This one arrived (almost two weeks after the first one was received in Hyrum) and Mason got to open it and see where he was going. You can see his reaction in the link below.
Mason's call
Mason's call