I'm probably in the minority, but I don't get worked up over what the press calls our scuba cylinders or what's in them. Divers know what they are.
The general public doesn't care and moreover won't comprehend the different gasses that might be in them.
In the case of the diverse tanks being used in rescuing the boys, I'm guessing some of them contain air and some nitrox. And some likely contain pure oxygen, as reported correctly or incorrectly by the press. From a lay point of view they all contain oxygen (in some percentage or another).
The general public doesn't care and moreover won't comprehend the different gasses that might be in them.
In the case of the diverse tanks being used in rescuing the boys, I'm guessing some of them contain air and some nitrox. And some likely contain pure oxygen, as reported correctly or incorrectly by the press. From a lay point of view they all contain oxygen (in some percentage or another).