Because there is no standard assignment for who owns screen doors, you can read your governing documents to determine who owns 'your' screen door in your community.
Whose responsibility it is to maintain the electronics in a shared office will depend upon the arrangement between those that use the office. A large office may have a resident technology worker who maintains the electronics. In smaller offices, it may be the job of a manager or secretary.
The owner of the firearm is responsible to keep the firearm secure and properly stored.
"Whose responsibility is it to see whether it's working?"
Diegetic sound can be on screen or off screen. It is a sound whose source is shown on the screen or whose source is implied to be there by the action of the film.
The LEC's
the player whose side the ball is on
MacArthur MacArthur
Everyone who sees it.
if the passengers are adults, it is their sole responsibility. However, if they are children, then it is the drivers responsibility.
It's the responsibility of us all.
yours
It is the RSO duty to maintain order on the range.