Minot AFB's B-52H 'Stratofortress' at the Grand Forks Air Force Base (GFAFB) 'Friends And Neighbors Day' on May 27th 1989.
The B-52H had the same crew and structural changes as the B-52G. The most significant upgrade was the switch to TF33-P-3 turbofan engines which offered considerably better performance and fuel economy than the J57 turbojets. (Wikipedia)