What was the Rolling thunder during the Vietnam war?

President Johnson took the war to NORTH Vietnam with aerial warfare. We couldn't invade NORTH Vietnam (without consequences from the communist superpowers), but we could bomb it! We dropped more bombs on North Vietnam than we did in all of WW2! One must bear in mind, that a Vietnam War B-52 could carry 108 bombs. A WW2 bomber could only carry 17 bombs.