Code name policy of assigning code names intended to give no such clues to the uninitiated. For example, the British counter measures against the V-2 was called "Operation Crossbow". The atomic bomb project centered in New Mexico was called the Manhattan Project, derived from the Manhattan Engineer District which managed the program. The code name for the American A-12 / SR-71 spy plane project, producing the fastest, highest-flying aircraft in the world, was "Oxcart". The American group that planned that country's first ICBM was called the Teapot Committee. Although the word could stand for a menace to shipping (in this case, that
Shield of the Trinity included in books such as the "Handbook of Christian Symbolism" by William James Audsley and George Ashdown Audsley (1865). The only name for this diagram which was in any regular use during the Middle Ages was "Scutum Fidei" (a Latin phrase meaning "Shield of the Faith", taken from the Vulgate of Ephesians verse 6:16). For example, in this c. 1247–1258 manuscript of John of Wallingford's writings, the quote from Ephesians 6:16 is placed directly above the diagram. The particular phrase "Shield of the Trinity", which is now the most common name for the diagram in English, didn't come into regular