If you're looking for deadly munitions and you find just a scrap of raw explosive compound without any mechanism to explode it and make it deadly, that's a false positive.

Why not just plant lots of explosive devices WITH a trigger mechanism... make the numbers game work for you :-)

Unlike Call of Duty, you don't get points for killing in real life. Wasting an enemy's time and hurting their morale on a pointless task trying to detect and disarm explosive devices that don't exist might be more powerful than a single one that does.

Making the enemy believe something is frequently more powerful than making them dead: http://www.psywarrior.com/dissemination.html