21.   The author of the new report on resettlement, an experienced field researcher, has concealed his identity to protect his career.

22.   The copies of the e-mail entered into the record were edited to conceal the identity of the recipient.

23.   The street violence appeared to be instigated by no more than three dozen young men who wrapped shirts around the faces to conceal their identities.

24.   This even though the hit man makes no effort to conceal his identity inside the club.

25.   To conceal his identity from the criminals who work the stations he patrols, he continually grows a beard, cuts it off and grows it again.

26.   Walker also said guards could wear surgical masks to conceal their identities.

27.   While in Afghanistan, Abu Aukel was told to conceal his identity by saying he was from Yemen, according to the court documents.

28.   Yet, though he spoke Yiddish and Hebrew, he spent a year concealing his identity and riding with the Cossacks, the inveterate enemies of the Jews.

29.   You will recall that in the Food Lion case, two ABC staffers concealed their identities in order to get jobs with the grocery store company.

30.   Police clashed with some of the demonstrators who wore hoods to conceal their identity and were peppered with fireworks and bottles thrown by leftists in the crowd.