In the spirit of thread-drift, does a search warrant grant the searchers access to a safe? An obligation by the home owner to open the safe or turn over the combination? Computer passwords?
That would depend entirely on the warrant and what the warrant was targeting. I imagine that in this case, the warrant would be for anything relating to the shooting. Depending on the circumstances, and the aggressiveness of the warrant/prosecutor/investigator and the willingness of the judge, the warrant could include access to a gunsafe and any/all firearms in the home. Might even be written to seize them all for ballistic testing, but honestly, I think that would be quite a stretch absent some suspicious circumstances (like a gunshot victim in the front hall and no firearms to be seen in the area). As for combinations, the one case I know of with a safe, the warrant was written to allow forced entry into the safe. When shown the warrant, with his attorney present, the owner gave up the combination rather than risk having the safe and/or the contents damaged. Probably a good choice, as in the long run the safe and contents were released to the owner.
As for computer access, I know that there were some computer cases going on in the office when I was still prosecuting, especially relating to sex crimes, but frankly I didn't pay that much attention, as it wasn't my area of speciality. Thankfully, it still isn't.