Looking at career opportunities that would be outside of the US and have a question. We'd most likely sell most things and the few items we would keep would be kept with family however we are not from IN and have no other family here. Firearms are definitely on the keep list but say I brought them to my Dad's who lives in IL, is there anything I need to do from a legal stand point to prove they are mine, not his and I would be collecting them back when we return to US soil? There's other family options in other states but I feel they are best kept with him just since he is familiar with firearms and he may decide to go shoot something once in a while.