PRESTON, LANCASHIRE - FEBRUARY 04: Armed police stand guard as the trial of Dale Cregan, who faces charges of murder and attempted murder, starts at Preston Crown Court on February 4, 2013 in Preston, England. Dale Cregan, 29, stands accused of four murders, including PC Nicola Hughes and PC Fiona Bone on September 18, 2012 and also in two separate attacks earlier this year of Mark Short and his father David Short. Cregan is also being charged with an additional four counts of attempted murder. (Photo by Christopher Furlong/Getty Images)
