Looking at picture and identify code used in which situation?

Concept:-

• "Code Black" in a hospital context might vary in meaning depending on the institution, as emergency codes can differ from one hospital or region to another.
• Generally, it's important to note that not all hospitals use the same color-coding system for their emergency codes, and the meanings can change based on local policies or practices. However, one of the more common meanings attributed to "Code Black" is a bomb threat or suspicion of an explosive device within the facility.