I can\'t get passed the mission called "Guardian Angel" (I think that\'s waht it\'s called, the one where you have to protect Diaz and that other bloke) How do you tell who\'s who? I don\'t know whether I\'m shooting who I\'m meant to be shooting, or whether I\'m shooting at the 2 that I\'m supposed to be protecting. Also, is there any easy way of shooting them, with the gun I picked up in the multi story car park, I couldn\'t hit a barn door with a bus.