The number of contractors working for the U.S. Defense Department within the U.S. Central Command area has seen an uptick recently, as America is getting drawn deeper into the fight against the Islamic State. The increase of 3,000 since the summer follows quarterly reports by the Pentagon that showed steady declines in line with U.S. troop withdrawals from Iraq and Afghanistan. Defense officials by law are required to publish quarterly reports about contractors within the Central Command area of responsibility...