It's just the same kind of arresting gear that they use onboard aircraft carriers.

During the recent downturn, the legacy carriers have gradually used up their financial cushion of aircraft and other assets they can borrow against. If they are forced to face a new crisis, they may fail more quickly than they have in the past.

The aircraft will sink into material and it pressing against the front gear will cause much more friction than normal braking would, ... It can stop it very quickly with no injury and very little damage to the aircraft.

I think some of these carriers can still make it,

There have been, we believe, a number of fighter aircraft sorties against refugees, but I can't comment any further about that,

Our inbound aircraft area carrying extra fuel to that we do not have to refuel all our aircraft at Heathrow.