On Call: How the National Guard Prepares for Flash Disaster Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email A Louisiana National Guard helicopter carries away sandbags as it takes part in an operation to fortify offshore barrier islands from incoming oil June 1, 2010 ( Getty Images ) Produced by Hsi-Chang Lin Produced by PRI and WNYC