Yes, they are the places that were critical to getting out.
This was the typical split foyer 2 story and a landing where there is a foyer half way between the two floors in front and a grade level entrance there. Without jumping out a window, you have to go down those stairs and if you were in the ground floor bedroom you have to get by that point too, even if you are going out the ground floor rear exit.
The utilities are under that foyer. I sprinklered the utility room, the hallway past that door on the ground floor and the foyer itself. Later I put a door directly out of the bedroom to the deck we added with steps down to grade.
