A variety of factors, including the weather and where the sun is hitting The Wall, determine when each of the changes or additions is made. When names are added, the highly technical procedure requires meticulous work to match the stroke and depth of the surrounding names to within one-thousandth of an inch.

A variety of factors, including the weather and where the sun is hitting The Wall, determine when each of the changes or additions is made. When names are added, the highly technical procedure requires meticulous work to match the stroke and depth of the surrounding names to within one-thousandth of an inch.