A U.S. Secret Service (USSS) agent assigned to Vice President JD Vance’s security detail is being investigated over allegations of leaking sensitive information. 1' TARGET AS RENEWED CONFLICT RAISES ASSASSINATION FEARSThe probe came a week after an MS Now report detailed alleged frustrations within Vance's security detail over last-minute personal and family travel requests. The Trump administration said the proposed use of Marine Two — the call sign for the helicopter carrying the vice president — was for operational reasons. A Vance spokesperson told Fox News the family is grateful to the Secret Service. "The Vice President is also a very active and involved Vice President, more so than recent officeholders," the statement continued.