On September 11, 2001, the transmitter facilities of WABC-TV, as well as eight other local television stations and several radio stations, were destroyed when two hijacked airplanes crashed into and destroyed the north and south towers of the World Trade Center. WABC-TV's transmitter maintenance engineer Donald DiFranco died in the attack. In the immediate aftermath, the station fed its signal to WNYE-TV, WHSE-TV, WHSI-TV, and the New Jersey Network (WNJN, WNJB, WNJT, WNJS, W43CH-D, W49BE-D and W35DK-D) before establishing temporary facilities at the Armstrong Tower in Alpine, New Jersey. The station eventually re-established transmission facilities at the Empire State Building, its original home when it signed on the air in 1948.