Nathalie Cabrol

Yeah.

So it's very interesting because then that completely avoids the potential issues you may have with the binds.

When you are diving, the risk of bubbles trapped in your lungs because of different pressures and different gases.

When you are breathing regular air, when you are scuba diving here, you know that you have to do some different... When you're coming back, when you're diving deep and you have conventional air, then you need to stop so that you can equalize...

the gases in your lungs.

If you come back too fast, then you can have air bubbles stuck, and then you can risk the binds, which you can risk to be paralyzed.

You can risk a number of nasty issues.

And we wanted absolutely to avoid that.

So diving with pure oxygen avoids this completely.

And it has another benefit at high altitude is that, well,

The greater risk when you are at high altitude is altitude sickness.

What is altitude sickness?

It's just you not having enough oxygen in your blood.

So this was a good benefit.

It was a good trade-off.

We were lucky enough to be also trained by the military.

So we came up with not the civilian rebreather, which is the big thing on the back that you carry on your back.

We actually were given...

Navy SEALs commando, rebreathers.

The director of military operations.