Reach the police station without collecting any items. In the passage under the main door to the station will be a zobmied Brad Vickers (the helicopter pilot from the first game). Kill him and steal the "Special Key" from his body. This allows you to unlock the locker in the dark room under the stairs. Leon will have two new outfits, and Claire has one outfit and a new weapon. Note: If this is done in game 1, Brad will appear there again in game 2.