delays are being caused by an 8% increase in airline travel and a shortage of security officers. the agency has also intensified its screening process to more carefully monitor all passengers after a federal investigation revealed significant security vulnerabilities. >> i would not characterize it as a national crisis. >> reporter: today, secretary of ofmeland security, jeh johnson, outlined plans for hiring more officers and deploying more canine teams to busy airports ahead of the busy summer travel caason when lines could get even ahnger. tens of thousands of people have missed flights during this period. >> without a doubt. >> reporter: did you do a good enough job preparing people for this new reality? >> i'm focused on what to do going forward and making sure that we are focused on this, that we are anticipating, that this has both the personal attention of myself and the eds.a. administrator. >> it's a crisis. >> reporter: congressman john mica sat on the floor of washington's reagan airport to hear the secretary's briefing. i asked the secretary if he felt