 DRB staff thought the idea was unworkable and worked against having it funded, but Bull shuffled his own department's funding and went ahead and developed it anyway.All the parts of Bull's future efforts, smooth-bore high-velocity guns, sabots for increasing performance, and hardened electronics, were now complete.Work on the Velvet Glove ended in 1956, and the DRB turned its attention to anti-ballistic missiles (ABMs).