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.
Wiktionary (0.00 / 0 votes) Rate this definition: city block (Noun). The smallest part of a town enclosed by streets. city block (Noun). The distance from one street to the next. city block (Noun). A distance comparable to the distance between streets in a city, in the approximate range of 0.2u20130.4 km.