How does the author of Passage 2 develop a contrast between the characters of Captain Montressor and Provost Marshal Cunningham? by showing that it is actually Montressor who gives the order to execute Hale by showing how Montressor refuses to follow orders and bring Hale to his execution by showing their disagreement over whether to allow Hale to complete writing his letters by showing Cunningham ordering Montressor to deliver Hale's letters despite the danger of approaching enemy lines​