 Complete the following phrase:  In 1966, United States Secretary of Defense Robert McNamara proposed cutting Chrome Dome flights because the BMEWS system was fully operational, the bombers had been made redundant by missiles, and 123 million  as of  could be saved annually. SAC and the Joint Chiefs of Staff opposed the plan, so a compromise was reached whereby a smaller force of four bombers would be on alert each day. Despite the reduced program and the risks highlighted by the 