Final answer:
The FBI, in conjunction with the Bomb Squad, is responsible for investigations of explosive devices and bomb threats related to terrorism.
Step-by-step explanation:
The Federal Bureau of Investigation (FBI), in conjunction with the Bomb Squad, is responsible for investigations of all located explosives, bomb threats, extortions with the use of bombs, and other found or suspected devices pertaining to terrorism, including weapons of mass destruction, biological agents, chemical agents, radioactive agents, toxins, and delivery systems that threaten the security of our community.