Inauguration planners said Wednesday that they have improved crowd-control procedures that inadvertently prevented thousands from seeing the 2009 event as officials prepare for as many as 800,000 people to pack the National Mall on Monday for President Obama’s second swearing-in.

“We’ve got a number of crowd management strategies that we’re implementing this year to improve on some of the systems that were in place last time to prevent some of the issues that folks experienced with getting into the ceremonies,” said Matt House, a spokesman for the Joint Congressional Committee on Inaugural Ceremonies. “Across the board, there will be improvements.”