I would suggest a training course before jumping into the truck. I've forgotten how many wilderness first aid courses my wife and I have had, and we're signed up for another one next month - 2-day training on a weekend. We live in the San Francisco Bay Area, and we figure we'll be in a wilderness for the first days, maybe weeks, after a quake.

I haven't seen any rescue courses vis-a-vis tsunamis. Check with your fire department and see what they say about training. Our fire dept. is very active in teaching search and rescue and first aid for CERT volunteers.

The first thing they teach, by the way, is not to become a victim yourself. If you jump in the truck and head down to the beach, you may be greeted by a 3d or 4th surge if the tsunami hasn't finished yet. Sea rescue is a perilous undertaking even for the well-trained and qualified.