Depends on specific agent used
Regardless of agent, Decontamination and ABCs are of primary importance
Use appropriate personal protective equipment (PPE)
Decontamination (should take place pre-hospital or otherwise prior to entering the ED)
Remove all patient clothing
Brush off dry agent (e.g. powders), copiously irrigate skin of any liquid contaminant
Use appropriate personal protective equipment (PPE)
Decontamination (should take place pre-hospital or otherwise prior to entering the ED)
Remove all patient clothing
Brush off dry agent (e.g. powders), copiously irrigate skin of any liquid contaminant
Remove all patient clothing
Brush off dry agent (e.g. powders), copiously irrigate skin of any liquid contaminant
Chemical weapons
Radiation exposure 
Caustic cocktail
Dirty bomb
Bioterrorism
Care under fire
Mass shooting
Hazmat exposure