Nate,
I am sorry to hear about your father's accident. I hope that he enjoys a full and quick recovery.
I encourage everyone to also consider buying a SPOT. It combines satellite technology with instant location identification. The unit is $150 ($50 rebate may be available) and it costs $100 a year for the service. For an extra $7 a year you can get $100,000 insurance for search & rescue, extraction costs, air ambulance, etc. costs. It works anywhere that you have an open view of the sky. In this regard, it is much better than a cell phone. It also allows you to send OK messages to whoever you designate (cell phone and computer) with your exact coordinates and google map location (on the computer). Another function allows you to request non emergency help from whoever you have entered in to the system to receive your OK and Help messages. Finally, it has a 911 button that will immedately alert emergency services that you need emergency help. It povides them an exact location as to where you are. A pretty damn cheap lifesaver and equipment saver IMO.
Bob