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.
STUMBLING-BLOCK; STUMBLING-STONE. stum'-bling-blok, (mikhshol, makhshelah; proskomma, skandalon): These are the most important of the varied renderings of either of two cognate Hebrew words, or of two different Greek words. Sometimes the Greek word for stone (lithos) accompanies the principal word.