I need some help deciphering all this. Google produced a very nice article
about explosive material but I don't have enough of a scientific background to understand it and apply it to the scene in my story. I also looked at a site explaining types of explosive, the FBI lab's forensics handbook, and another "intro to explosives"
essay which deals specifically with military munitions.
I need the following:
Could someone explain to me in layman's terms what these articles are basically saying?
I also need help applying it to the story scenario.
The scene is as follows: the sheriff's office in a major city has been bombed using some sort of explosive material after the night shift was gunned down. The person was trying to disguise the original killings (it didn't work, but that's beyond the scope of this query). I'm thinking that the person who pulled the job would have demolitions or explosives experience gained from serving in the armed services. He would also be the type who likes to tinker with things and have enough pride and confidence in his work that the explosive would have some sort of 'signature' (either in materials used or possibly in blast pattern).
I would really like a type of explosive with the following characteristics:
- used in the Gulf War (early 1990s, not the current one)
- would not be something a Viet Nam or WW2 vet would recognize
- would be uncommon or unusual enough that it would keep forensics guessing until detailed analysis was done
Some of this could be accommodated by the guy tinkering with things. If so:
- what would he have added to create a unique chemical signature or blast pattern? Essentially, what would a law enforcement officer with similar background (he's a Gulf War veteran and his expertise was demolitions) see that others wouldn't in this compound and its remanents?ETA
: With a bit of poetic license, I think the SEMTEX suggested by several folk might do the job, accompanied ty the red demo cord suggested by someone else. It's sufficiently odd that the intended police officer would pick up on it but he'd be one of only a few capable of doing so. The SEMTEX actually works well for other reasons, which I didn't mention. The people who did this had someone on the inside so it's possible to place it on structural supports and not get noticed and the mastermind funding this endeavor is definitely not hurting for money.
I still need to figure out how the blast pattern would work and what chemical traces it would leave, though.