From a briefing a few weeks ago:
The KC30 will not carry an ALM. It will carry at least one MSO. MSOs will be NCO aircrew who will fulfil one of two roles depending on the sortie type.
1. 3rd man on the flight deck during AAR sorties, dispensing fuel and managing the AAR plot.
2. Senior cabin crew on non AAR sorties, much like a purser on a regular airline. This includes the duty of pushing a trolly and asking "chicken or bl*w job?"
The first job is essentialy an amalgamation of the current roles of Nav and Air Eng. The second job is essentially that of a steward. All MSOs will do both. Inevitably, some will struggle with the complexity of the first job, and some will feel that the second job is beneath them.
Trouble ahead methinks.