Ringo H.W. Chiu / AP
In this May 30, 2014, photo, Los Angeles County District Attorney senior investigator John Calicchio shows a glove used as evidence in the O.J. Simpson murder case, in the D.A's office in Los Angeles. After Simpson was acquitted of killing his ex-wife, Nicole Brown Simpson, and her friend, Ronald Goldman, the LAPD made significant changes in the scientific investigation division.