Complex sentence: During Operation Linebacker, the resumed bombing of the north starting in April 1972, the targets included the Hanoi area and the daily orders were issued by McCain, knowing his POW son was in the vicinity.
Split into simpler sentences: During Operation Linebacker, the resumed bombing of the north starting in April 1972, the targets included the Hanoi area. The daily orders were issued by McCain, knowing his imprisoned son was in the vicinity.