Been there.. OK, not up in the air, too -

(Inside the cage of a 500 KV Cockroft-Walton. Not the same Amperes possible as up-there, but lethal enough for biped-work.)

Everything he said re. 'safe' makes sense; 'course there's also freak weather - but I'd suppose they are Very conservative about that - and in that event, you DO take out the line for a few minutes.

Rilly Cuuute sign-off