+1 to this!An alternative to this command if we're not keen on trusting players to open chests could possibly just letting them scan it instead. In short terms, they'd execute the police raid command, specifying the region, be able to open doors & trapdoors, but then any chests that they right click would give them one of two endings:
1. If there's weapons, it would place the weaponry in their inventory & tell them so in their chat, removing it from the chest
or 2. If there's no weapons, it'd simply tell the officer that there are no weapons.
You only tend to have weapons removed in raids and anything more could be communicated with staff if absolutely necessary (i.e., a warrant to specifically look at any suspicious books they have!)
However I do see that it's risky allowing cadets and PO this, which is why I suggest a potential side category to roles? Initially this role won't show on your name and etc, but will allow categories like ranks! This could be for EMS, KPD, Government, Shrine, or any other faction with ranks that aren't included in the role of the individual. If this isn't able to be implemented then it's likely it shouldn't be implemented at all :(