Since 2001, as thousands of C.I.A. officers and contractors have cycled in and out of Afghanistan targeting terrorists and running sources, operatives from the Special Activities Division have been part of some of the most dangerous missions. Overall, the division numbers in the low hundreds and also operates in Somalia, Iraq, the Philippines and other areas of conflict.C.I.A. paramilitary officers from the division were the first Americans in Afghanistan after the Sept. 11 attacks, and they later spirited Hamid Karzai, the future president, into the country. Greg Vogle, an agency operative who took Mr. Karzai into Afghanistan, went on to run the paramilitary division and became the top spy at the C.I.A.The first American killed in the country, Johnny Micheal Spann, was a C.I.A. officer assigned to the Special Activities Division. He died in November 2001 during a prison uprising.