his second term. i headed west to spend a weekend with the southern arizona militia, a right-leaning group whose members are focused on securing our southern border. they're led by a man who calls himself silverback. would you consider yourself an extremist? >> in a good way, yes. >> in what way would you consider yourself an extremist? >> the strict belief in the constitution. >> fire! >> we watched silverback and his men train. >> there you go. >> we shot some guns. >> you hit it. >> and we talked about the future. do you think the government's concern about groups like yours is justifiable, is a valid concern? >> the only reason they should have that concern is if they plan on doing something bad to the people. there's no other reason to be concerned about it because at this point, to my knowledge, there's not a bunch of militia groups banding together and taking over the white house.