The Unattended vs. Suspicious Item Postcard and Poster provide information on how to safely determine if an item is a serious threat or just unattended. A suspicious item is anything (e.g., bag, package, vehicle, etc.) that is reasonably believed to contain explosives, an Improvised Explosive Device (IED), or other hazardous material that requires a bomb technician and/or specialized equipment to further evaluate it. Generally speaking, anything that is Hidden, Obviously suspicious, and not Typical (HOT) should be deemed suspicious.