Not sure about what Carillion did but Interserve have contracts in the Middle East and the PJOB's. Things happening in the UK, people wait at the gates to see if they turn up tomorrow. Abroad its a little different. The thing with the defence contracts is the equipment and infra is all MOD owned. Interserve just provide the manpower to operate/maintain it. So i think the problem is who will pay the guy that runs the power station or ensures the water treatment plant is treating water tomorrow? If i was the MOD, or more specifically DIO, i would be seeing who else in the FM world is waiting in the wings.