mass destruction involving a hazardous chemical or biological weapon is very high up on the scenarios that we are seeing. >> chris: i love that, "man-caused incidents." congressman, how do you think that napolitano did generally over 4 1/2 years as secretary of homeland security? what impact do you see her resignation having at a moment when immigration reform and border enforcement are at the height of the national agenda? >> i have respect for that position. we disagreed on many issues, particularly when it came to the border. she would go around saying, it's never been more secure. i took just the opposite position, that it is not secure. that's why we passed the border security results act out of my committee to achieve that, to get that done. so i think -- and also with respect to morale, morale has been very low in the department. i think there's an opportunity to get a real leader in, who can work with house republicans on