### Question
What is the definition of proficiency flying?


### Answer
The definition of **proficiency flying** is as follows in *10 U.S.C. § 2245*:

> given that term in Department of Defense Directive 1340.4.

#### Citation:
  - *10 U.S.C. § 2245*
  - Heading: **Subtitle A-General Military Law     > PART IV-SERVICE, SUPPLY, AND PROCUREMENT   > CHAPTER 134-MISCELLANEOUS ADMINISTRATIVE PROVISIONS > SUBCHAPTER I-MISCELLANEOUS AUTHORITIES, PROHIBITIONS, AND LIMITATIONS ON THE USE OF APPROPRIATED FUNDS**

