Jeff Relf wrote:

Hi Daryl McCullough, You said,
" after the observer passes through the event horizon,
his future light cone is pointed
purely * inside * the event horizon. ".

Is that true for the local observer,
or just for an observer at an infinite altitude ?

It's true for the local observer. The one outside never passed
throughthe horizon.

( Is it true for Kruskal coordinates ? )

The coordinate system has nothing to do with it unless it ceases
todescribe physics at the horizon because it's singular there where
there's no real singularity.

It's true in Kruskal coordinates and they are not singular at the event
horizon.

John Anderson