When you have two highly placed cooperators, it eases the prosecution's burden substantially. At the same time, when you're faced with officers who are trying a hear-no-evil, see-no-evil defense, your corroborator is bolstered because the hear-no-evil see-no-evil defense just doesn't strike jurors as common sense.  -   Kendall Coffey     Quotes
When you have two highly placed cooperators, it eases the prosecution's burden substantially. At the same time, when you're faced with officers who are trying a hear-no-evil, see-no-evil defense, your corroborator is bolstered because the hear-no-evil see-no-evil defense just doesn't strike jurors as common sense. Kendall Coffey