`Holy crap! That officer was there to investigate a possible burglary. There is no right on his part to force the owner to open anything, much less a locked safe. "In the interest of safety" is not a search warrant, which is exactly what he needs if he wants you to open something that is locked.
I honestly mean no offense to your police friend. However,
average officers know little about Constitutional Law...basically enough to allow them to conduct their NORMAL duties (unless they have advanced education beyond the academy). This is a different situation that the
average officer probably does not know the correct answer to. That doesn't necessarily mean that the officer here was being malicious in any way, but good intentions doesn't mean that he was right either.
Here is the catch. Is this something that is worth your time? Without saying so, I would imagine that the officers in the chain-of-command that you spoke with probably felt that it was wrong, but that there isn't much that can be done about it other than educating the officer involved and/or other officers as well. You can file a complaint...it will be looked into...but there isn't really a punishment that corresponds with what happened. It will possibly be looked at as a potential training opportunity. It just depends on whether or not you want to pursue it. NOBODY can stop you from making a complaint...period. It is just a personal decision that is up to you to make, and no one else. I'm not sure that there is a right or wrong answer here with regards to filing a complaint. I can tell you that officers will make mistakes at their job...all of us do. Good luck with what you decide, and sorry to hear that your home was broken into. Good job for keeping your firearms locked in a safe.
Your wife gave him permission AND a key to look inside the safe.
Once you consent, you can't take it back.
This is not a correct statement. You CAN at any moment for any reason revoke any permission that you have given the police and they have to listen (assuming that they did not find anything that would warrant probable cause during the initial consentual search. If you start to give a voluntary statement, you can stop at any time. If you give consent to search a vehicle and change your mind, you can at any time and they have to stop, unless they find PC and obtain a SW. YOU ALWAYS retain your rights.