What are the two types of Stinger missiles used by the Avenger?

The correct response identifies the two types of Stinger missiles that are associated with the Avenger system as Block I and Block II. The Stinger missile system, developed for portable air defense, has undergone various upgrades and revisions, classified into different blocks that reflect their developmental stages and capabilities.

Block I missiles are the earlier version, designed primarily for use against aircraft and are known for their basic infrared homing characteristics. Block II missiles introduced advancements, improving their operational effectiveness, such as enhanced sensitivity and better guidance systems, leading to improved performance in detecting and engaging targets.

Understanding these two blocks is essential for comprehending the capabilities of the Avenger system and how it employs these missiles in various operational scenarios. The distinctions between Block I and Block II reflect the evolution in design, technology, and combat effectiveness, which are critical for effective air defense operations.