Put all government security clearance holders together and you’d have the second-largest city in the United States, according to the latest annual numbers from the Office of the Director of National Intelligence. As of October, the number of federal employees and contractors allowed coveted access to secret information totaled almost 4.92 million, an increase of about 1 percent over the preceding year. Of that total, about 3.5 million were feds, augmented by almost 1.1 million contract employees, the ODNI report said. There were also about 300,000 cleared individuals who fell in the category of “other,” meaning that records didn’t make…