Also possibly the fault of very old fuel. Cullen makes a note of it, and straightens.

"All right. At least one more of those, a good supply of fuel to burn, a tarp, some rope -- "

He says this as he heads out the door. Whether Cullen is talking to Alistair or to himself depends on whether Alistair is prepared to follow.

" -- something to put on the floor... and a broom. Ought to make for two trips, total, once supplies have been located."