U.S. Customs and Border Protection officers opened fire during an immigration enforcement operation in San Bernardino, California on Saturday, firing three shots at a departing vehicle. Masked agents in unmarked vehicles surrounded the family's truck with weapons drawn and broke windows without identifying themselves, prompting the driver to flee out of fear. Federal authorities claimed the action was self-defense after the vehicle struck two officers, though no agents were injured. The family later refused to allow agents into their home without a warrant, and federal agents surrounded the residence for several hours.