With the Bush administration's war on terrorism spread over five continents, and the hunt for Osama bin Laden intensifying as spring approaches, the agency "is stretched beyond their limits," even as it makes a historic drive for recruits, one senior CIA veteran said. … As an additional safeguard, and because of a shortage of CIA paramilitary personnel, the agency has also hired private security firms to protect bases and personnel. "We don't have enough people with skills required," one senior intelligence official said.”…To meet the demand for additional personnel, the CIA has turned to its reserves -- retirees who are willing to come back full time on short notice -- to fill many positions. To coax more people into the dangerous assignment, many officers and support staff are being rotated out of Iraq after 90-day stints.