One of the three Long Islanders killed in Manhattan when a crane collapsed was laid to rest Thursday.Brad Cohen, 54, of Farmingdale, was working on East 51st Street Saturday when the crane crashed onto six buildings. A funeral service for the father of three was held at Gutterman's Funeral Home. Seven people were killed in the accident. Clifford Canzona, of Seaford, and Santino Gallone, of Bellmore, were among the victims.