There are no survivors from a factory explosion that occurred at a military munitions plant in the US state of Tennessee on Friday, authorities said on Saturday. "There's a gauntlet of emotions there," Humphreys County Sheriff Chris Davis said during a news conference, pausing to clear his throat before he asked for prayers for the families of the victims in a shaky voice. "We've recovered no survivors," he said, without providing any specific information on individuals who were unaccounted for