Line of sight analysis for entire US using Living Atlas elevation layer?

[Jay_Gregory]

I trying to do some line of sight analysis.  I have two point datasets, and need to figure out which points from dataset a (elevation of 30 f AGL) can be seen from dataset b (elevation of 2500 agl).  Is there any wholesale way to do this in Pro using a publicly available elevation service?  I was using linear line of sight in the defense toolbox, but I think the processing extent of the elevation service (5000x5000) prevents large scale analysis. 

If not, is there a way to reasonably break up this analysis into smaller jobs to achieve this?

Any tips would be helpful!

[BobBooth1]

I think I'd try buffering the 2500 feet points by whatever the distance to horizon is at that height (several miles?) and then use those (or use a "Select by Location" with that distance, probably faster) to select the points within that distance for analysis.

You could iteratively process them using ModelBuilder or Python.