Another says a goalkeeper must feel secure, that he should not be looking over his shoulder at the performances in practice of his possible replacement.

Power can drain away at any moment, triggered by a few bad results or speculation about a possible replacement.

There seems to be no possible replacement, though, for the original movie's effervescent novelty value.

While it has never been mentioned officially as a possible replacement, locals are wondering if it might be needed in an emergency.

Boron carbide has been identified as a possible replacement for more toxic barium or hexachloroethane mixtures in smoke munitions, signal flares and fireworks.