I think that the 'purple' training base has proven that when the three services are colocated with a common aim, the single service problems get diluted to the point where they are no longer a factor.
However 'colocated' and 'common aim' are very important words in that paragraph. The cross pollination of rotary members albeit a one way street to a blue uniform should assist in future jointery. A big problem is that JHC is neither one thing or the other and therefore will rank low in the budget priority list of any individual service, in short, sucking the hind one.
I overheard a conversation recently suggesting that within a decade it will be the fourth service. Perhaps such a status is needed sooner rather then later. Along with more 'purple' airbases.
micromanage everything to the point where the wheels fall off.
So thats what happened to the Chinook at Abingdon the other year
