Members of the National Guard walk through the Rotunda of the US Capitol in Washington, DC, January 13, 2021, ahead of an expected House vote impeaching US President Donald Trump. Getty Images The National Guard revealed it would be doing additional vetting of guardsmen serving as security during President-elect Joe Biden's inauguration. The group made the move following the January 6 insurrection at the Capitol Building in which several members of law enforcement, and at least one National Guardsmen, were charged with participating in the insurrection. A spokesperson for the Guard said guardsmen are being told, "if they see or hear something that is not appropriate, they should report it to their chain of command." Visit Business Insider's homepage for more stories. The National Guard is running additional background checks on its guardsmen ahead of President-elect Joe Biden's inauguration on Wednesday, in an attempt to weed out potential extremists.