"...To even perform the flyover so the crowds could enjoy it, these bombers had
to fly low and slow, and they don’t exactly maneuver like F-35s. Each aircraft
performs differently at these low speeds and altitudes, which made keeping a
tight vee formation a feat in and of itself....."
If you watch the flyover video, you'll notice random puffs of black smoke out
the back of the B-52, as he gooses the 8 throttles to maintain his position. I
think I even saw one from the B-1