The EMAS arrestor bed at the end of Teterboro (New Jersey) Airport’s Runway 6 is difficult to see at night, and two jets have taxied into the bed, made of porous concrete by ESCO’s Engineered Material Arresting System Division and designed to stop aircraft traveling at high speed. On October 25, a Challenger taxied into the EMAS after landing, one week after installation. On December 6, a Learjet tried to turn around on the EMAS, according to airport manager Lanny Rider. Despite bright yellow end-of-runway chevrons painted on the EMAS bed, pilots are having a hard time spotting the material, he said. The FAA airport chart for TEB does not depict the EMAS bed, although a notam was issued when it was first installed. The TEB EMAS cost $8 million; repairs are $25,000 to $30,000, Rider said. The airport might install red rubber delineators between the runway end and the EMAS bed or an IFR lighting system with lights across the end of the runway.