[InABunkerUnderSF]

They had "at least 6 bombs, if you will," says the chief. They also had a some guns.

So, older brother is not a US citizen. Younger brother is under age.

How did they get the guns?

Convert wife/ex wife? Druggie pals? Street corner transaction? Other?

[MarkBsnr]

How did they get the guns? Same as every criminal. The black market in guns is very lucrative.