They receive on the job training along with specialized training. Crime Scene Technicians look for latent fingerprints, tool marking and trace evidence. They also photograph, videotape and diagram crime scenes. This bureau has two mobile crime scene units which respond to crime scenes throughout the City of Mission on a 24 hour basis. The Crime Scene Technicians frequently operate in extreme harsh environments and are often exposed to gruesome crime scenes. This Crime Scene Unit plays an intricate role in the overall success of the organization.