### Question
Can you define what defense feature means?


### Answer
**Defense feature** is defined as the following in *10 U.S.C. § 9511*:

> equipment or design features included or incorporated in a civil aircraft which ensures the compatibility of such aircraft with the Department of Defense airlift system

#### Citation:
  - *10 U.S.C. § 9511*
  - Heading: **Subtitle D-Air Force and Space Force > PART IV-SERVICE, SUPPLY, AND PROCUREMENT > CHAPTER 961-CIVIL RESERVE AIR FLEET**

