The jury in State Department special agent Christopher Deedy's murder trial will have to either convict him of second-degree murder, or acquit him of the charge. It does not have the option of convicting him on the lesser charge of manslaughter. Circuit Judge Karen Ahn said yesterday that neither prosecutors, nor defense attorneys asked her to instruct the jury that it could consider a manslaughter verdict.  That means, it's all or nothing. A conviction would mean an automatic prison term. Deedy is charged with shooting to death 23-year-old Kollin Elderts of Kailua in a Waikiki McDonald's in November 2011.  Prosecutors say Deedy was drunk and inexperienced when he fired.  Defense attorneys say Deedy fired to protect himself and his friend Adam Gutow­ski, who the agent said was being kicked in the head by Elderts and his friend Shane Medeiros.