Losing Parts

So at work we have been in the labs for about the last month working with the mannequins.  Yesterday this is a couple of them that I found....

I asked the instructor that was in charge of the lab why these legs looked like this : )
She said the guy was going to come around to fix them and needed to have the right parts together...
I asked her if she thought their skin color looked the same to her.... and it was 2 right legs...
Not a good sign

This old man literally lost his head.  I am not sure what the students
are doing with them when we are not there. I don't want to ask.