Which of the following is NOT a common type of UXO?

Missiles are indeed not typically classified as common types of unexploded ordnance (UXO). UXO refers to munitions that did not detonate as intended and can include various types of explosive devices that are left behind in areas where military actions occurred. Shells, bombs, and grenades are conventional types of munitions often found post-conflict or in training areas and are recognized as common UXO by military and explosive ordnance disposal (EOD) professionals.

Shells generally refer to artillery projectiles, which can be larger munitions designed to be fired from a cannon or howitzer. Bombs are explosive devices designed for aerial deployment, and grenades are small handheld explosives used by ground troops. These items are often encountered in scenarios involving ordnance clearance and recovery operations, making them common UXO types.

In contrast, missiles are usually larger and more complex systems with guidance capabilities, often launched from specific platforms, such as aircraft, ships, or launch systems. While they can be part of a broader UXO scenario in some contexts, they are less frequently encountered in the same ways that artillery shells, bombs, and grenades are, given their specific usage and deployment nature. This distinction helps clarify why missiles do not fit