Rules of "engagement" with Iraqi detainees. Some are illegal under the Geneva Convention, but they are consistent with the "spirit" and "ghost" of the Geneva convention. They include: "SENSORY DEPRIVATION, Using blindfolds, earmuffs and other materials. The field manual states this can be done for no more than 72 hours." It is not as bad as you think; because it does not allow the bag over the head of the prisoner to be left for more than 72 consecutive hours. Hail the humane empire.