Which of the following is considered an unsatisfactory characteristic of canned subsistence items?

An unsatisfactory characteristic of canned subsistence items is a crushed or torn container. The integrity of the container is crucial because it protects the food inside from contamination and spoilage. A damaged can may compromise the seal, allowing air and bacteria to enter, which can lead to food spoilage or foodborne illness. In military food service, ensuring the safety and quality of food is paramount, so any visible damage to the container is taken very seriously.

In contrast, while a color change can indicate a potential quality issue, it may not always mean that the food is unsafe. The size of the can does not necessarily relate to its quality or safety but is more about portioning and serving needs. The expiry date is critical for food safety, but if a product is still within the expiry date, it can still be considered acceptable unless other indicators suggest otherwise.