Michael Yon is an independent journalist and former Green Beret who was embedded in Iraq for nine months in 2005. He has returned to Iraq for 2007 to continue reporting on the war. Here is a portion of his latest dispatch exclusively for FOXNews.com. A Tactical Operations Center (TOC) is the headquarters for a unit. Company-level TOCs are the smallest I have seen. A typical infantry company has about a hundred or more soldiers. The commander will normally be a captain. A company-level TOC often consists of a radio and a map, and one person on duty 24/7. It might...