Suspicious Material

by Stephen Peters
Answer: TAR

When assembled, the jigsaw forms the outline of a Mooninite, separated into 16 images:

Or more cleanly:

Each picture is a portion of one of the pictures on lite-brite artist Peter Berdovsky's web page showing the locations of the Mooninite devices advertising the Aqua Teen Hunger Force movie (and inadvertently causing the 2007 Boston Bomb Scare). The images on that site are numbered from 1-20. In order, the pictures come from images 20, 18, 5, 14, 20, 15, 14, 2, 12, 1, 14, 11, 16, 9, 20, 19. Translating those numbers to letters gives the phrase TRENTON BLANK PITS, and fans of ATHF will be able to fill in the blank with the answer TAR.