NEW YORK CITY, New York — Days before one of the most concentrated public gatherings on Earth, the FBI and Department of Homeland Security have flagged a specific threat profile for Times Square’s New Year’s Eve celebration: lone wolves and small cells operating below the radar. The joint threat assessment, cited by New York outlet ABC 7 NY, underscores a familiar but persistent vulnerability. “Lone offenders remain a particular concern due to their frequent ability to avoid detection until operational,” according to the assessment compiled by the Federal Bureau of Investigation and the Department of Homeland Security. That line carries weight. It’s the tactical reality that keeps security planners awake: actors with no network chatter, no financial trail, no…..