WASHINGTON (Reuters) -FBI employees were ordered on Sunday to answer a questionnaire about any work they may have done on criminal cases related to the Jan. 6, 2021, attack on the U.S. Capitol, stoking fear about a fresh round of firings at the law enforcement agency. The list of questions in the memo, seen by Reuters, direct employees to give their job title, any role they played in the investigations into the Jan. 6 riot by supporters of President Donald Trump and whether they helped supervise such investigations.