Those appositive Oxford commas, though: > The exception to the rule is when referring to the Manned Spaceflight Center (also known as the Manned Spacecraft Cen

Those appositive Oxford commas, though: > The exception to the rule is when referring to the Manned Spaceflight Center (also known as the Manned Spacecraft Center), the predecessor of Johnson Space Center in Houston, or to any other historical program name or official title that included “manned”