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.
block. 1  a solid mass of wood, stone, etc., usually with one or more flat or approximately flat faces. 2  a hollow masonry building unit of cement, terra cotta, etc.: a wall made of concrete blocks. 3  one of a set of cube-shaped pieces of wood, plastic, or the like, used as a child's toy in building. a mold or piece on which something is shaped or kept in shape: a hat block. a piece of wood used in the art of making woodcuts or wood engravings. Printing. the base on which a plate is mounted to make it type-high.