TSA is also in the process of upgrading 250 existing ProVision units deployed at 40 US airports with the new image-free ATD software under a separate contract with L-3. The millimeter wave-based ProVision ATD automatically detects potential threats and highlights their location on a generic mannequin that appears on a monitor attached to the ProVision ATD. "Our research teams developed sophisticated automatic detection algorithms that power the industry's first image-free people-screening solution," said Thomas M. Ripp, president of L-3 Security & Detection Systems. ProVision ATD uses safe radio waves and features automatic target detection software that addresses passengers privacy concerns. This automatic detection capability is available on new ProVision ATD systems or through a straightforward field upgrade. In addition to US locations, similar ProVision ATD systems are in use in Europe and Asia. With this recent order, more than 900 ProVision systems have been procured worldwide.