Related by context. Frequent words. (Click for all words.) 67 bomb sniffing dogs 61 Sniffer dogs 57 Metal detectors 55 bomb sniffing dog 55 Bomb disposal 55 Hazardous materials 53 sniffer dogs 52 drug sniffing dogs 49 Bomb Squad 49 metal detectors 49 Hazmat crews 48 Cadaver dogs 48 bomb disposal 48 Heavily armed 47 Explosives 47 sniffer dog 46 Forensic experts 46 cadaver dogs 46 cordoned off 46 Uniformed 46 Shell casings 45 Cleanup crews 45 Plainclothes officers 45 Paramilitary troops 45 protective suits 45 explosives 45 Hazmat 44 helicopter circled overhead 44 Paramilitary forces 44 bomb sniffing 44 Arson investigators 44 Haz Mat 43 Surveillance cameras 43 sniffing dog 43 Suspicious package 43 Sheriff deputies 43 searched 43 Armored vehicles 43 wearing bulletproof vests 43 Secret Service agents 43 Policemen 43 accelerants 43 Emergency crews 43 Ambulances rushed 43 metal detector 43 uniformed officers 42 Postal inspectors 42 Ambulances 42 cadaver dog 42 hazardous materials 42 explosive residue 42 explosive ordnance disposal 42 HAZMAT 41 haz mat 41 rescreened 41 Dozens 41 FBI agents 41 hazardous material 41 plainclothes 41 Closed circuit 41 controlled detonation 41 cadaver sniffing dogs 41 radiation detectors 41 booby trapped 41 Sirens wailed 41 Plainclothes 41 police 41 combed 40 X ray machines 40 Blood stains 40 Police 40 baggage screening 40 National Guardsmen 40 K9 unit 40 HazMat 40 Inspectors 40 Bullet holes 40 specially trained 40 Forensics experts 40 Firefighters 40 cordoning off 40 sheriff deputies 40 Emergency responders 39 inspected 39 Explosive Ordnance Disposal 39 sniffing dogs 39 explosive ordnance 39 patrolled 39 helicopters circled 39 SWAT 39 hazmat 39 frisked 39 Crews 39 frisking 39 x rayed 39 X ray scanners 39 helicopters buzzed overhead 39 bloodhounds 39 Screeners 38 booby traps 38 decontaminated