DLA Troop Support Product Test Center Analytical textile technologist Anna Wilson, far left, and lab supervisor Jamie Hieber, second from right, explain how the PTC-A testing processes aided in better adherence of reflective lettering on Navy physical training uniforms to a group of sailors assigned to Naval Support Activity Philadelphia April 3, 2019 in Philadelphia. The PTC-A hosted the tour to educate DLA’s primary customer, the warfighter, on the scientific testing the lab does in support of their missions.