A woman from Arnold admits her part in an armored car stickup in Farmington.  Leann Dotson is the first of three people charged in the case to plead guilty.  She’ll be sentenced in January. The prosecutor says Dotson stole the truck after threatening the two guards with a shotgun at a gas station and drove the truck to another place where a getaway car was parked.  The other two people implicated are her boyfriend and her father.