Correction
December 23, 1988
Because of an editing error, the letter to the editor Dec. 22 from Brig. Gen. Michael P. McRaney, director of public affairs of the US Air Force, misstates the USAF estimate for the cost of adding to the capability of the B-1B bomber's electronic countermeasures system. The figure should have been $500 million, not $5 billion.