He slammed the locker door, dogged it, found a hammer on a shelf and swung it thrice against the frozen tank to loosen the valve. Foyle twisted the handle grimly. With the last of his strength he unsealed the helmet of his spacesuit, lest he suffocate within the suit while the locker filled with air if this tank contained air. He fainted, as he had fainted so often before, never knowing whether this was death.