Space Shuttle with Apollo capsuleSpace shuttle contractor North American Rockwell submits a safety study to NASA concerning safety and escape systems for the upcoming space shuttle, including a study of smaller vehicles with potential use as “lifeboats” in the event that a shuttle is unfit for return to Earth due to heat shield or other catastrophic damage. The various proposals, which include the possibility of permanently berthing an Apollo command module (another vehicle contracted to North American Rockwell) in the shuttle’s cargo bay for use as a lifeboat, are rejected by NASA due to the impact that each proposal would have on available space and weight for cargo.