A bomb is an explosive device. It is very strong, creating a huge blast.
Use in Psi-OpsEdit
These bombs are very powerful. One was strong enough to put a crater in the ground, kill a man standing near it, and cause the base to become very unstable. The base began to fall apart after the first blast. After two more blasts, the base was obliterated.
According to Sara the bombs are nuclear weapons with all of the nuclear material removed, leaving only the explosive detonator.