Floor walkers

I  have now heard about floor walkers ( people use different names ) in a number of different contexts

In a military planning centre floor walkers move around from static workstation to static workstation to assist the information conherance between 'workers' ( who can't move ).  

In forensic accounting -  someone from UCL interaction group talked about a floor walker in the context of a group of legal and accounts who take all the records from a large complex fraud. Each person looks at data bit by bit and the floor walker trys to make connections between diffrent people ( 'you thought john Smith was odd hmm jake also found a odd record about John Smith lets make a new file on him'). 

In air trafic control  - someone talking about using multi touch for air traffic control talked about a floor walker moving between static workers who control zones. The floor walker is much more experienced and can solve co-oridination problems or just help individuals when work load is too high. 


I wonder what this means in terms of colocated collaboration across an ecology of devices