Ever spend eight hours counting hairs on caterpillars under a microscope?
The way the system works, if we intercept any bugs or pests at our ports, we have to send the bug to an official identifier to determine whether the item needs to be treated in some fashion, or whether the pest is okay to let into the country (because we already have it here). This isn't so much a problem when searching passenger luggage, because we just confiscate the item and the passenger never gets it back anyway. But in cargo, when someone brings in a shipment of produce worth thousands (or even millions) of dollars, they really want to know in a hurry whether they can bring it in to sell or whether something has to be done with it. That's why they train the port agriculture specialists to recognize commonly intercepted pests. If the person at the port recognizes a specific pest correctly a certain number of times, that person gets "release authority" for that pest, which means the person can make the decision on the spot about what to do rather than wait for the identifier.
From our training here, we will get release authority over certain things, depending on whether we answer the questions correctly on our tests.
This week we're going to switch to a new unit on beetle larvae. After that we will start practicing actual interception; that is, we have to cut open fruit and such to search for bugs.