Mike Johnson - ascending harmonic scale

[MrHillary]

Hi all,

I hope you're keeping well. First off, I wanted to share this video of Mike Johnson which I absolutely love: That's what pedal steel is all about for me.

So, my question is I've been drivin myself crackers trying to work out the ascending run starting about 25 seconds into the vid. If someone can give me some pointers or tab I would be very much obliged!

Thanks in advance,
Nico