Going with the goers

For years I worked with teams who very clearly knew their role was SUPPORT.  

Almost all of the levels of authority were built to be in SUPPORT.  SUPPORT of the next level.  

Confidence was high that everyone would complete their SUPPORTING role.  

My role was to deliver the actors to a location within 30 seconds.  

I was in SUPPORT of the actors but wasn't one of the actors.  

I was SUPPORTED by a communication team that relayed the progress of the overall mission.  

I was SUPPORTED by maintenance teams that made sure that my equipment was operational.  

I was SUPPORTED by drivers who accepted my input on changes to the route and speed to make our arrival on time.

The understanding that almost everyone's role was SUPPORT was critical to getting each component objective met.  

In my current role the actors are the caregivers.  And even they are in SUPPORT - SUPPORT of the patients who are in need.  

What are the barriers to embracing my role, being accountable to the next level BELOW me, suborning my ego, and fostering an environment of trust so that the mission (patient care) is successful?