Architect Curt Fentress has designed and remodeled airports all over the world.  His first was Denver International Airport, which opened in 1995.  Six years later, the attacks of September 11th, 2001 brought a lot of changes to DIA, and to the projects Fentress has worked on since then.  In a visit to DIA, he talks with CPR's Mike Lamp about the new security measures he has to plan for, and about keeping passengers comfortable in an era when flying is a lot more stressfull than before.  The interview is part of Colorado Matters, and CPR's week-long look at Coloradans who were affected by 9/11 and how they're remembering it ten years later.  [Photo: CPR]