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.
The format of the BoM, even though it is from the same customer, can change from one transmission to the next, making it difficult to match and confirm data. Language is another stumbling block because it, too, can vary from BoM to BoM. 1  Correctness-Incorrect data is a serious problem.