Related by context. Frequent words. (Click for all words.) 53 gunpowder residue 51 gunshot residue 50 explosives 45 blood stains 45 bloodstains 45 fingerprints 43 accelerants 43 fingerprint 42 explosive device 42 Bomb sniffing dogs 42 bloodstain 42 TATP 41 explosive 41 white powdery substance 41 gunpowder 41 swabs 40 swab 40 suicide vest 40 residue 40 cocaine residue 40 bullet casing 40 carryon luggage 40 Improvised Explosive Device IED 40 controlled detonation 39 Explosives 39 shell casing 39 triacetone triperoxide 39 deadly poison ricin 39 bomb sniffing dog 39 Shell casings 39 luggage 39 Blood stains 39 improvised explosives 39 powdery substance 39 bomb sniffing dogs 38 explosive PETN 38 anthrax 38 contained PETN 38 Christine Sidenstricker 38 unexploded bomb 38 improvised explosive 38 blood stained 38 bullet fragment 38 radioactive substances 38 TB bacteria 38 detonate explosives 38 sniffer dog 38 explosively formed penetrator 38 munitions 38 bullet casings 38 homemade bomb 37 swabbed 37 swabbing 37 melamine chemical 37 saliva 37 PETN 37 reasonable suspicion 37 ricin 37 shell casings 37 Blood stained 37 radioactive substance 37 aroused suspicion 37 Screeners 37 improvised bomb 37 bomb 37 homemade explosives 36 ballistics 36 substances 36 leafy substance 36 chemical 36 exploded prematurely 36 detonated explosives 36 trace amounts 36 TSA 36 liquid explosives 36 detonator 36 radioactive materials 36 improvised bombs 36 shotgun shells 36 detonators 36 detonate 36 arrestee 36 shoe bomber 36 pentaerythritol 36 marijuana residue 36 Gen. Sarhat Qadir 36 vapors 36 contaminants 36 finger prints 36 improvised explosive device 36 chemical warfare 36 X ray machine 36 chemicals 36 metal detector 35 residues 35 seminal fluid 35 sarin 35 RDX 35 Sniffer dogs 35 flammable liquid 35 checked baggage