About halfway through the 147-minute film,Joel Edgerton joins the other divers as Australian diver/anaesthetistDr “Harry” Harris after Volanthen realises they will have to sedate the boys to get them out.Craig Challen,diving partner of Harris,played a significant part in the rescue,but he’s nowhere to be seen.
Three other British divers have significant roles:Kevin Spink as Josh Bratchley,Tom Bateman as Chris Jewell and Paul Gleeson as Jason Mallinson. Nicholson leaves out the rest of the Australian contingent,not to mention the Chinese,Czech,Finnish,Danish,Belgian,French,Canadian,Indian,Israeli,Japanese,Dutch,Russian and Ukrainian divers who went into the cave to help. There were more than 100 divers in those caves,most of them Thai.
Howard has said he tried hard not to make a white-men-to-the-rescue film,and to some extent he succeeds. Thai Navy SEALs have a major presence. The Thai actors speak Thai with subtitles rather than casting actors who can speak English.
The politics of national pride play a major part in the story. Howard makes sure we see the Thais working in every facet of the rescue,including a heroic,largely civilian effort to stop the flow of water into the cave from above the boys. The two men who died were Thai rescue divers. Howard recreates the death throes of Saman Kunan,the retired SEAL who came back to help,in agonising detail.