Some have focused on the lower threshold of use which may lead those who use them to become "trigger-happy", especially in dealing with peaceful protesters. Others have focused on concerns that weapons whose operative principle is that of inflicting pain (though "non-lethal") might be useful for such purposes as torture, as they leave no evidence of use, but undoubtedly have the capacity to inflict horrific pain on a restrained subject. According to "Wired", the ADS has been rejected for fielding in Iraq due to Pentagon fears that it would be regarded as an instrument of torture.