Operator: find-next-participation
 Problem space:  top-ps
   -   Operator Overview: 
   
-  This operator sets the task of finding the next step the NTD
        has a role in. 
    
-   Operator Proposal: 
   
-  It is proposed whenever the NTD is trying to launch the space
        shuttle and has no other task. 
    
-   Operator Application: 
   
-  It is implemented by the
        find-next-participation
        problem space. 
    
-   Operator Reconsider: 
   
-  Reconsidered if a task is posted.
Proposed in the top space (in file
launch.soar6),
but implemented by the in:
find-next-participation.soar6