Just on a side note, I'll mention how important that Red Cross bib is to ICRC personnel. They frequently go into combat zones, into insurgent areas, and negotiate checkpoints, with just that as protection--no body armour, no PSD, no side arms... just a white piece of cloth.

In many war zones--coupled with good field-level intelligence and good local staff--it is enough, in large part because how ICRC has protected the symbol and its own reputation.

In some areas (Iraq and Afghanistan among them), obviously, it is not.