<Where>
  <Or>
    <In>
      <FieldRef LookupId='True' Name='NewsLocation' />
      <Values>
        <Value Type='Integer'>1</Value>
      </Values>
    </In>
    <In>
      <FieldRef LookupId='True' Name='OperatingCompany' />
      <Values>
        <Value Type='Integer'>3</Value>
      </Values>
    </In>
  </Or>
</Where>