Detainee checked by corpsman – O.K. Water offered to detainee – refused. Detainee wrote two letters to 9-11 victim families expressing condolences. Detainee initially resisted writing letters until he was told that he would not have to say who he was. It should be noted that the writing of letters was done with a felt tip marker to prevent the detainee from having anything that could be used as a weapon, and the letters will not be forwarded.