Complex sentence: The 740th and 741st Strategic Missile Squadrons operationally controlled the ICBMs and in January 1963, the 743d Strategic Missile Squadron was activated with a third squadron of Minuteman ICBMS.
Split into simpler sentences: The 740th and 741st Strategic Missile Squadron operationally controlled the ICBMs. In January 1963, the 743d Strategic Missile Squadron was activated with a third squadron of Minuteman ICBMS.