### Question
What is the definition of operational test and evaluation?


### Answer
The definition of **operational test and evaluation** is as follows in *10 U.S.C. § 4171*:

> given that term in section 139(a)(2)(A) of this title. 

#### Citation:
  - *10 U.S.C. § 4171*
  - Heading: **Subtitle A-General Military Law > PART V-ACQUISITION > Subpart E-Research and Engineering > CHAPTER 309-TEST AND EVALUATION**

