  Bullets are fired, one per second, with independent speeds sampled uniformly
from a discrete set. Collisions result in mutual annihilation. We show that the
second fastest bullet survives with positive probability, while a slowest
bullet does not. This also holds for exponential spacings between firing times,
and for certain non-uniform measures that place less probability on the second
fastest bullet. Our results provide new insights into a two-sided version of
the bullet process known to physicists as ballistic annihilation.
