A family friend is going through a nasty divorce, and asked me to hold onto his guns for him. His soon to be ex already once called the cops and said that he threatened her, and had guns in the house. The acuusations were false, but it still took him awhile to get them back. Since I'm holding onto his guns for him, is there any paperwork I should fill out? All are locked up and safely away, but is there anything else I/we should do to cover our rears?