THAAD's interception capability is described as capable of high endo-atmospheric and exo-atmospheric engagements.

• A. It counters only cannons
• B. It counters only aircraft
• C. It counters only surface missiles
• D. It conducts high endo-atmospheric and exo-atmospheric engagements

Answer: (D)

THAAD is a high-altitude ballistic missile defense system designed to intercept missiles during late flight at very high altitudes, either within the atmosphere or just above it. The phrase high endo-atmospheric and exo-atmospheric engagements directly describes its ability to take out targets while they are still far from their impact point, in the upper reaches of the atmosphere or in near space. It’s not a gun system, nor is it meant for aircraft defense, and its purpose isn’t limited to traditional surface-to-surface missiles. The interceptor and its radar network are built to detect, track, and destroy ballistic missiles in these high-altitude phases, which is why conducting high endo-atmospheric and exo-atmospheric engagements is the best description of its capability.