51.   He used various pen names to conceal his identity.

52.   His face is hidden by bandages after gruesome surgery to conceal his identity and dodge omnipresent eye-scanning devices.

53.   His capture ended a virtually nonstop driving stint during which he did little to conceal his identity.

54.   In Alto Yurinaki, villagers say soldiers brought an informant wearing a hood to conceal his identity.

55.   Instead, he concealed his identity with a pair of sunglasses.

56.   It also touches on issues such as the right to conceal the identity of anonymous sources and labor benefits for graduated professionals.

57.   Japanese media, meanwhile, continued to speculate that the crew may have sabotaged their own ship to conceal their identities.

58.   Many of the talk shows conceal the identity of guests by blurring their faces and distorting their voices.

59.   Many of them wore ski masks and sunglasses to conceal their identity, but no arrests were reported.

60.   Most assaults are boldly executed during the day by gunmen who seldom bother to conceal their identities.