In the aftermath of the terrorist attacks, jobs have become harder to come by. There are, however, pockets of opportunity. Of course, the obvious field is security. Job prospects are good in companies that provide high-tech security products, such as face-recognition systems, and more conventional forms of protection, like closed-circuit surveillance cameras and security guards. Government too is hiring folks in security; not just airport screeners, but people to handle other aspects of improving readiness, like rewriting agency safety manuals. Science types might look to companies that develop bio- and chemical-weapon preventatives and curatives.
Less obvious, the videoconferencing industry is booming - videoconferences are safer, easier, and cheaper than flying everyone to in-person meetings. Also, college enrollments are on the upswing. As jobs are scarce, people figure it's a good time to go back to school. You don't need to have a Ph.D. to work at colleges - they hire everyone from groundskeepers to salespeople. (Note: admissions officers are salespeople.)