Heroic EMT Slain In Brooklyn - NYPost.com
Mourning Bands are worn on your shield, usually from the time you hear about the death to the time the person is laid to rest. If you don't have a shield (most private ambulance companies in NYC don't require them), then you wear it on your left shoulder. You know, those buttoned down little flaps on the top of your shirt that you might attach your ID to?
Please be safe out there. Both on duty and off.
For reference, see:
Badge Mourning Bands - paradestore.com
Mourning Band Etiquette - forums.officer.com