Take it seriously. Act accordingly.
The terrorist threat is so incredibly small it is completely negligible. Even in aviation. It's the government/public reaction to the perceived terrorist threat that actually threatens aviation the most.
A knee jerk reaction from the aviation community, where we voluntarily implement
more security measures (most of them ineffective) to combat a virtually non-existing threat will only give the public the idea that aviation really has a problem, or even is the problem.
While if we try to put the threat in perspective, talk about it in realistic terms, show the public how safety-conscious aviation has been the last 100 years and follow the guidelines and rules that have kept aviation safe, we might just be able to convince the public and the government that aviation, and terrorism by aviation, is not the problem.
Terrorism is about perception guys, not about actual risk. What we as the aviation community do, and what the government does, shapes that perception. Far more than that it modifies the actual risk. Right now, with all the senseless and inconsistent security measures, we're heading in the wrong direction.