involving airplane crashes and it is used internationally. >> so you are saying it is legit. do you know on the holster situation, is it the same mechanism, do you know? >> the issue comes to this. if the behavior has a common original starting point and is similar, you can get these roirps where there -- areas where there is inattention. if you have a different holster configuration, then you get a directed attention toward the process and minimize the chance of an error. however, it is much better as greg meyer was talking about, to use an entirely different limb which then makes you less susceptible to use -- to the slip and error. >> it is great to have you on. bill and mark as well. and coming up one of the nation's biggest school cheating scandals. and we're not talking about students we're talking about administrators. the massive conspiracy. a judge who sented some of the