Drivers on Highway seven west in Nacogdoches will notice some construction work at the A.L. Mangham Airport. It's part of a safety addition for pilots and nearby residents. Crews are installing a directional lighting system. Once completed, strobe lights will guide pilots onto the runway during bad weather. The airport's south end is in a low area that's frequently in fog. The restricted visibility means pilots must land somewhere else or put nearby homes in jeopardy. The project is completely funded by the FAA. Construction work is behind because of bad weather. City planners are accustomed to waiting. The city first requested the improvements 15 years ago.