Here's an article that talks about Pfizer's vaccine. They're coordinating their own shipments and not using the government contractor to handle it (smart move). They've developed these small "thermal shipper" suitcases and if unopened, it will maintain the vaccine at the proper temp for up to 10 days. I'm guessing once they crack the suitcase open, that it's "go time".....they'd need to either transfer to deep freezer, or administer those vaccines in a timely matter. It seems like Pfizer didn't trust letting a third party handle this. I don't blame them.
Here's the pertinent part: I'll link full article below.
“The responsibility for determining how many deep-freeze machines exist at healthcare facilities has fallen on states because there is no central inventory,” FreightWaves’ Eric Kulisch writes. He notes that uncertainty about the cold-chain capabilities of transportation providers and vaccine administration facilities resulted in Pfizer developing a special cooler, or “thermal shipper,” with real-time GPS and thermal monitoring that can maintain deep-freeze vaccine storage for 10 days if left unopened. Kulisch reports that the shipping container is “about the size of a small suitcase” and uses dry ice to maintain recommended storage temperatures.
https://www.pharmaceuticalcommerce....ate-its-own-coronavirus-vaccine-distribution/