If you commission in to the Air Force as a non-rated officer (not a pilot, navigator, air battle manager) you'll be required to serve 4 years active duty. Pilots are required to serve 10 years. Basically it would be 8 years active (2ish years for flight school, 6 years actually flying) then 2 years inactive........
Stumbling block. For other uses, see Stumbling block (disambiguation). A stumbling block or scandal in the Bible is a metaphor for a behavior or attitude that leads another to sin.
Define building block. building block synonyms, building block pronunciation, building block translation, English dictionary definition of building block. n. 1. A block used as a building material, especially a cinder block. 2. A small wooden or plastic cube used as a building toy. 3. A basic element or part...