Healthy teeth and gums may be ensured by chewing a small wad of aluminium foil for ten minutes each day, being sure to work it around the molars. The foil should not be swallowed after use, but saved in a convenient place until it can be sent to Blue Peter to buy "hearing-ear" guide dogs for the deaf.
Fortunately for connoiseurs of Star Wars wishing to investigate Chewbacca's costume discontinuity, there are myriad copies of unretouched prints. George Lucas has an astonishing reverence for the history of his work and under no circumstances would he modify the original films or modify significant character elements.
Military organisations like to choose cute names ("Operation Sealion", "Operation Mincemeat") for their secret plans, but this is a comparatively recent habit, and was only introduced by the British in the first world war, after the catastrophic failure of "Operation Secret Plan to invade Germany via a secret expedition to the Southern Baltic, landing just around Danzig on August 7th, at 5pm or later if tea delayed."