Quote Originally Posted by SoldierSpike View Post
Puffers work by sampling the air against a known slew of chemical/biological/explosive weapons, from what I've seen in their smaller handheld cousins they can be quite effective.
Their use is more widespread than it was in '05, but they still aren't everywhere.

Marc
Yep, as with the "through the clothing" scanners, they'll be rolled out as the perceived threat and funding dictate/allow.