Many of us follow our instincts here. Similar to the scenarios above, we give as much space as possible in an effort to avoid adding to the danger and possible trauma of the situation.
Although now that I think about it, I never knew what the specific procedure should be, according to local authorities.
New Orleans Police Superintendent Ann Kirkpatrick had this important, yet hilarious, message for those attending Mardi Gras parades in her city on Tuesday.