The last of the four people accused of being the holdup men in the ATM Solutions robbery in St. Louis has pleaded guilty. Aaron Hassan Johnson admits that he and three others took $6.6 million dollars in the biggest robbery in St. Louis history in August of 2010. Several other people have been charged, been convicted, or have pleaded guilty to being accessories. Johnson faces at least five years in prison. He’s already serving a 15-year sentence for another robbery.