Most common type of IED in the US is a pipe bomb with a burning fuse.

• A. Pipe bomb with a burning fuse
• B. Car bomb with fertilizer
• C. Pressure cooker bomb
• D. Letter bomb

Answer: (A)

In this context, the device most likely to be encountered in the United States is a pipe bomb with a burning fuse because it’s simple, inexpensive, and makes use of readily available materials. A pipe bomb uses a short section of pipe as the confinement vessel and a fuse to ignite a small explosive charge, which can be assembled with minimal tools. This combination has historically made it the most common type of improvised explosive device in domestic incidents, especially among individuals with limited resources or casual access to materials. Other device types—larger, vehicle-based bombs using fertilizer-based explosives—require more materials, planning, and logistics, so they are less frequently encountered in everyday U.S. settings. High-profile cases involving pressure cooker devices or letter bombs have occurred, but they are far less common overall. The key idea is that the pipe bomb with a burning fuse represents the most familiar and frequently seen IED in domestic training and response scenarios, so recognizing its signs is crucial for assessment and safety. If you ever encounter such a device, prioritize safety by evacuating the area and contacting authorities.