Ranjit from Pune states, ever since the Shuttle disaster and the involvement of rigid polyurethane foam as an insulating material for the External Tank,
which presumably was the cause of the disaster, I've been keen to know how this problem has been addressed.
Well, as I mentioned, we have -- one of our biggest issues was foam coming off the tank.
And we have modified the tank to ensure that we don't have that kind of damage.
Foam coming off the tank did damage the wing leading edge of Columbia and did result in the accident.
So this has been a very important area for us to go correct.
And we have done that, both by changes to the foam as well as using the heaters.