A CAL FIRE firefighter-paramedic has been accused of raping three women while on duty, including a terrifying alleged attack in a shed behind his station. David Renteria III, 51, appeared Wednesday at the Southwest Justice Center in Murrieta, clad in a yellow jail-issued jumpsuit and at times cowardly hid from the cameras outside the courtroom, according to KTLA . David Renteria III, 51, made his appearance Wednesday at the Southwest Justice Center in Murrieta, clad in a yellow jail-issued jumpsuit. Riverside County Sheriff's Department He is facing multiple felony charges, including kidnapping to commit a sexual offense and several counts of rape with special allegations, Riverside County prosecutors said. They claim Renteria targeted and raped three separate women. The Sheriff’s Department arrested Renteria at his Placentia home last month following an investigation that began in January. The firefighter-paramedic is accused of exploiting his authority to lure women into terrifying sexual assaults.…