Private security guards in Iraq...could face being thrown into crowded and violent Iraqi jails once their era of legal immunity ends on January 1. Under a security pact signed with the United States, foreign contractors, including some 30,000...private warriors, will become subject to trial in Iraqi courts...The role of security contractors may grow as Washington reduces its troop numbers and as foreign businesses - so Baghdad hopes - open operations in the still-violent country. "The days of expats with guns and trucks is going to reduce...Iraqis won't tolerate it,"...[a] security firm official said...[O]thers said the new regime will make it more difficult to attract Western employees and to insure operations...[refers to Blackwater, Triple Canopy]