The unanswered question is WHY were the inmates upset?  I'm not sure if "riot" is the correct term.  Breaking windows will cost the state to replace.  Soap and water on the floor?  Just mop it up. 

I hope any subsequent investigation looks into what prompted the disturbance.  

There may have been 15 inmates in the A pod but that doesn't mean all 15 were involved.  Some may have been victims of circumstance.