If a tourniquet has been applied, write the letter “T” on the casualty’s forehead with a pen, the casualty’s blood, mud, or other substance.

The information may be written on a piece of tape applied to the casualty’s forehead. The “T” alerts medical personnel in the evacuation vehicle and at the medical treatment facility that a tourniquet has been applied. If possible, include the time and date that the tourniquet was applied.