Complex sentence: In January 1965 the 307th Bomb Wing began phasing down and was inactivated on 25 March 1965, being reactivated at U-Tapao Royal Thai Navy Airfield Thailand for forward deployed B-52 aircraft supporting combat operations in Vietnam.
Split into simpler sentences: In January 1965 the 307th Bomb Wing began phasing down. It was discontinued and inactivated on 25 March 1965, being reactivated at U-Tapao Royal Thai Navy Airfield Thailand for forward deployed B-52 aircraft supporting combat operations in Vietnam.