The text is a letter from the Federal Aviation Agency providing information on the cost and personnel requirements of the sonic boom test program in Oklahoma City. The program involves approximately 25 full-time and an equal number of part-time participants, with a total cost of $856,545. The letter also mentions the President asking the National Academy of Sciences to review the tests. Another letter from a citizen expresses frustration with the FAA's efficiency and calls for a Senatorial investigation.