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.
For years, the stumbling block for making renewable energy practical and dependable has been how to store electricity for days when the sun isnât shining and the wind isnât blowing. But new technologies suggest this goal may finally be within reach. By Jon Luoma â¢ July 13, 2009.