Two Los Angeles Police Department officers have been charged with repeated sexual assaults on four women while on duty in their squad car and elsewhere, prosecutors and police said on Wednesday. The veteran officers, James Nichols, 44, and his partner, Luis Valenzuela, 43, were arrested on Wednesday and were slated to be arraigned on Thursday, with prosecutors expected to ask that bail be set at nearly $4 million for each man, according to the district attorney's office. An 18-count criminal complaint filed on Tuesday charges both officers with numerous instances of forcible rape, rape by threat to arrest or deportation, sexual battery and forcible oral copulation, among other offenses.