Not so sure about this :-/

Today my father came over to supervise my husband installing a bathroom vent. We need a bathroom vent quite badly but it’s hard to get plumbers/electricians to come over for a little couple-hundred dollar job. My husband is now perched out on the roof of the dining room with a very large drill. Drilling directly into the house while my father is leaning out and supervising from the bedroom window… The last time I checked everyone still had all their fingers and toes. I’m nervous!