HI Jim. Never heard of the BH-54?
It was never called that, but an Army Ch-54 dropped one or two 10,000 lb bombs in Vietnam. True, and I believe a picture of the aircraft has been posted in Rotorheads. Idea wasn't anti-personnel, but to create a helicopter LZ in dense jungle. Apparently it knocked down a lot of trees, but left the opening with a maze of obstacles instead of the hoped for mostly cleared area.