warn sign everywhere.forty-one-year-old sara atkinson stop take medication accord family members grow increasingly paranoid claim bomb plant home think cameras hide inside five-year-old son shoes.at one point atkinson threaten kill take son her.shortly kenny kreuscher mother put .22 rifle head lay sleep little boy tell father mommy punch him.ken kreuscher sr. record conversation son document mark leave child mentally ill mother hop someone would intervene.over course past year ken kreuscher file numerous police report contact child protective service multiple time go court try get order protection tell everyone court possibility would happen kreuscher say interview denver kdvr march 11.but kreuscher raise alarm no-one intervene son behalf.at begin march colorado mother leave state kenny travel roundup montana.on march still montana shoot little boy sleep turn gun herself.the five-year-old die 12 hours later.here story kusa.there fine line violate right person diagnose mental illness protect live innocent people.under federal law person deem threat others suppose able possess gun problem law however strict rule person serious mental illness determine threat others case sara atkinson although people close include son sound alarm mental health law offer little help.while unknown sara atkinson get gun use kill child likely law prevent purchase own gun spite warn sign behavior.restrictions gun ownership limit people involuntarily commit mental institution people find guilty reason insanity court law people find incompetent stand trial.at one time local law enforcement officials far likely err side caution request gun permit license revoke case person behavior suggest potential threat.for example 2010 local law enforcement officials tennessee could ask state revoke gun permit case person pose material likelihood risk public second amendment nut challenge state law call violation gun owner rights.thanks nra across country become increasingly difficult limit anyone access gun.today even warn sign nearly impossible revoke person right gun.image credit video screen capture via kusa mentally-ill mother shoot sleep five-year-old head video