I was in ECM, not on BUFFS, but on a different AC that flew hot missions.
I do recall, in the late 60s, as a young Airman TDY in an Asian AFB, watching in awe as B-52s with 24 underwing bombs and who-knows how many in the bombays lined up to deliver their ordinance (Dunno, Ho Chi Minh trail?).
The bombers were so heavily laden that they took off w minimum fuel, each right behind a KC-135 for topoffs as soon as airborne.
We heard the rumble of bombs from our FB out in War Zone C in 1970. Almost felt sorry for the Charles under that bombardment..