3-LETTER ABBREV.
'(<a href="http://www.j-archive.com/media/2008-05-30_J_03.jpg" target="_blank">Jon of he Clue Crew delivers the clue from White Sands NASA Test Facility in New Mexico.</a>) Used to test propellants & explosives, NASA's White Sands High Energy Blast Facility can withstand blasts of 500 pounds of trinitrotoluene, also known by this 3-letter term'
TNT