No, a sword cannot cut a bullet in mid-air. The speed, small size, and hardness of a bullet make it highly challenging, if not impossible, to intercept or cut with a sword.

Bullets fired from firearms travel at extremely high velocities, often exceeding the speed of sound. They are specifically designed to penetrate targets, including armor and other protective materials. The momentum and kinetic energy of a bullet, combined with its small size, make it highly resistant to being cut or intercepted by a sword blade.

Attempting to cut a bullet with a sword would require exceptional timing, precision, and speed, far beyond the capabilities of human reflexes. It is an impractical and highly dangerous feat to attempt.

When it comes to dealing with bullets or firearm threats, it is important to prioritize personal safety, seek cover, and follow appropriate self-defense protocols, which may involve seeking shelter or employing other modern self-defense methods.

Always prioritize safety and follow the laws and regulations of your jurisdiction when considering self-defense options.