Supplement 1. eTable 1. Firearm storage among adult firearm owners living with children all of whom are ages 13-17 (none are younger) eTable 2. Firearm storage practices among adult firearm owners whose children are all younger than 13 years of age eTable 3. National Firearm Survey storage questions, response options, and findings from the 2015, 2021, and 2024 National Firearm Surveys (NFS) eTable 4. Verbatim storage questions in the 2015, 2021, and 2024 National Firearm Surveys Supplement 2. Figure.