This facility would enable consistent checking and rechecking of the remedies, which was Cayce's goal. This allows comparison in lameness when rechecking after treatment has been implemented. When on treatment with bisphosphonates rechecking bone mineral density is not needed. The rechecking was reportedly permitted by Fernando. Most collimators have grid patterns for rechecking the zero after the barrel is sighted. In response, Professor John Yoo said that no rechecking is required.