Mike - thanks, the trucking industry and parcels are an interesting area I hadn't considered - but I'm still trying to picture how Identa's Stinger kits would be used in this environment.
In today's world if someone suspects a package may contain a bomb, everyone gets the hell away from it and calls the police - no one would want to scrape a sample from the package for testing in a Stinger kit.
I'm also guessing that in most cases there isn't any external material on a package that would be suitable for testing... Aiming4.