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.
Butcher's block in modern American kitchen. A circular chopping block used in a restaurant in Haikou, Hainan, China. Butcher block (or butcher's block) is a style of assembled wood (often sugar maple, teak, or walnut) used as heavy duty chopping blocks, table tops, and cutting boards. It was commonly used in butcher shops and meat processing plants but has now become popular in home use.