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A 17 year old boy was scuba diving with his father. Soon after coming to surface, he began to experience symptoms of decompression illness, including joint pains, itchiness, ataxia, paresthesias, and confusion. He has been placed on 100% oxygen by non-rebreather and an IV has been placed and the plan is to transport him to a facility with a hyperbaric chamber.

Which of the following is the most important aspect of the transport arrangements?