It wouldn't have been long, as SAC would go to CHROME DOME (airborne alert) and having one third of the force on 15-Minute ground alert by 1 Oct 57, and weapons storage would be built at every SAC base.
A look at former SAC bases on Google Earth finds that some old bases still have the Weapons Storage Areas: Mather, Clinton-Sherman, Loring, KI Sawyer, Wurtsmuth, etc., all have the WSAs still there. Some do not: Castle's was plowed up and became a Federal Prison, while March's has probably been plowed up and is now housing developments. Same goes for Larson (Grant County) in Washington state.
A look at former SAC bases on Google Earth finds that some old bases still have the Weapons Storage Areas: Mather, Clinton-Sherman, Loring, KI Sawyer, Wurtsmuth, etc., all have the WSAs still there. Some do not: Castle's was plowed up and became a Federal Prison, while March's has probably been plowed up and is now housing developments. Same goes for Larson (Grant County) in Washington state.