What the future might look like: "California Seizes Guns as Owners Lose Right to Keep Arms"

This story is as sympathetic as possible to the government going into a person's home and taking their guns.  Nine officers going in to the home seems like more than a little bit of overkill.  As far as I can tell from the story, there is no discussion that indicates that this gun owner represented a threat to himself or others. From Bloomberg:

Wearing bulletproof vests and carrying 40-caliber Glock pistols, nine California Justice Department agents assembled outside a ranch-style house in a suburb east of Los Angeles. They were looking for a gun owner who’d recently spent two days in a mental hospital.  

 They knocked on the door and asked to come in. About 45 minutes later, they came away peacefully with three firearms.  

California is the only state that tracks and disarms people with legally registered guns who have lost the right to own them, according to Attorney General Kamala Harris. Almost 20,000 gun owners in the state are prohibited from possessing firearms, including convicted felons, those under a domestic violence restraining order or deemed mentally unstable. . . . .