yea transporting it can be tricky, I doubt I will take it this time as we're going to be in Belize City for a couple days before AC. I went to Costa Rica back in 1995, and took some steaks down to some missionary friends, started with steaks frozen like rocks, and they were starting to thaw by the time we arrived in San Jose. That worked ok, but that was back in 95, not sure what they think if they found it in your luggage today. What are your connections like from Montana? And how long are you in transit ? I'm sure your meat would be good for 12 hours or so, but put in an good plastic bag, or better double bag it so you don't mess up your speedo's.
Neil