what is happening on the legal attle? >> really, it is on a case by case basis at this time.d to keep in mind who the audience is. a lot of the people, they are criminals. these are not the most savory bunch of people. they have, a lot of them have committed serious crimes including murder, sex offenses. they are not the most sympathetic crowd. they often don't have the resources to follow through on these types of things. but there are several people, several people who have looked into lawsuits or challenged the accuracy of the monitor in court. honestly, there have not been a lot of victories. i think it is too soon to say how this is going to evolve. there are criminal defense attorneys who have represented these cases. primarily, they just try to get them off rather than trying to challenge the accuracy of the evice. they have been trying to challenge the accuracy of the device saying my guy does not deserve to be in violation of parole. he should not have spent the night in jail. i think that's where it is at that the point. oliver: up next, the complex and multipronged

they have already seen attle. many of these trenches are actually german trenches. susan: we talk about the advance of medical technology during world war i and the treatment of casualties. allison: they had a lot of sophisticated medical technology. the professionalization of nurses, physical therapists, and occupational therapist, really trying to expand the use of triage and bringing casualties out of the front lines to hospitals, then later base hospitals where they could get more sophisticated treatment. you had a lot of university hospitals that would go over as a team. so you have skilled surgeons, doctors, and nurses that were used to working together and volunteer their services to go as a unit to europe. susan: a graphic showing the advance of the allied effort in that part of france. mitchell: saint-mihiel was a complete success for the americans. all of their objectives were captured in one day on september 12. this is the 13th, the next day where they are mopping up. this was a great morale boost for the americans. the other allied commanders were a lit