@parados,
There is no need to arm agents of the EPA, the Department of Education, the Bureau of Land Management etc. there are plenty of appropriately armed agents of local, State, and Federal law enforcement agencies that be called upon to provide security if it is perceived by the mundane agents as necessary.
If you feel trusting the average citizen with a gun is perilous, it's hard to understand how you think being an employee of a government agency somehow elevates these same people to a status of full responsibility.
If the average Joe with a gun is menace, the average Joe with a gun who assumes he has the authority of The Government, has to be an even bigger menace.
You can't have it both ways. Cops who, arguably, are the best trained and most reliable government agents to be armed often abuse their privilege, and yet we are to think that an employee of the Department of Education can be trusted with a gun and governmental authority?
Face it, you default to all things governmental are good.