Stacey Zimmerman videotapes a mock crime scene, looking to record anything that could be used later as evidence during a special exercise conducted Saturday on campus. Arriving at the taped-off crime scene in an old building by the university airport, about 15 students taking a new homicide crime scene investigation class were told that three bodies had been found. Then they set to work collecting and documenting evidence such as blood spatters, spent cartridges and footprints. The class, part of the master's program in forensic science, is taught by Fred Tulleners, former director of the Sacramento and Santa Rosa county criminalistics laboratories and now director of the forensic science program at University Extension. He teaches with Faye Springer from the Sacramento County crime lab. A typical homicide scene investigation takes about eight hours and involves collecting about 100 items of evidence, Tulleners said. At right, forensic science master's program students Katie Hutches and Shannon McPartland look for a footprint they lifted from the floor during last Saturday's exercise.