According to NBC, the attorney for Charles A. Graner Jr., one of the accused torturers, provided this photo purporting to show military intelligence officers in conference with Graner in Abu Ghraib -- the implication being that they were calling the shots there, and he was following their orders.
Earlier truthout.org said the photo had been removed from MSNBC's site after being up briefly, but I found it there by searching. Here it is, as well as truthout's cached copy.
http://www.msnbc.msn.com/id/4979838/
http://www.truthout.org/docs_04/051504B.shtml