The Florida Highway Patrol said that Anthony Neff, 58, and Susan Danza, 59, were on Neff’s 2015 Harley-Davidson Electra Glide traveling south on State Road 31 shortly before 9 a.m. Saturday when the vehicle went left of center on a curve and was hit by a northbound Chevy Silverado 3500. Both were killed. The FHP report said the Silverado’s driver tried to avoid hitting the motorcycle but the left front of the truck hit the front of the cycle. The crash produced a chain-reaction collision between four other vehicles, including a semi-trailer and another motorcycle. Kimberly Henson, 53, the driver of a 2002 Honda motorcycle, was also seriously injured and was taken to Bayfront Medical Center. None of the drivers or occupants of the four other vehicles involved were injured. The FHP said it was not known if Neff and Danza were wearing helmets. Henson was wearing a helmet, the report said.