The Transportation Security Administration (TSA) has pushed back two deadlines for conducting background checks on workers who handle air cargo. The original deadline to screen all such workers was December 1, 2006. However, the deadline has now been extended to March 15, 2007 for the staff of U.S. aircraft operators and foreign air carriers. An even later deadline - June 15, 2007 - has been set for employees of indirect air carriers. These are companies that contract with air carriers to perform a security-related service such as storing cargo or moving it from a warehouse to the airport. Read the regulation establishing these new deadlines.