A group of motorcyclists has begun its second annual ride tracing the intended path of Flight 93 had it not been hijacked during the 2001 terror attacks.

Riders left from Newark, N.J., on Thursday and plan to arrive in San Francisco on Sept. 11. The ride was organized by the relatives of Louis Nacke, who was one of 40 passengers and crew who died in the crash.

Flight 93 crashed in a Pennsylvania field Sept. 11, 2001, after being commandeered by terrorists.

Nacke's cousin, Patrick White, said Thursday that he hopes the ride will raise awareness of the heroes of Flight 93 and help raise money for the permanent memorial being built in Pennsylvania.

A submerged barrel containing human remains is still yielding more questions than answers about who the victim is and how the person was killed, a coroner said Thursday."Circumstantial evidence has provided a tentative identification" but dental records and other checks are necessary to confirm that and, even so, authorities weren't even willing to disclose whether they believe the victim is male or female, Indiana County Coroner Michael Baker said.State police in Indiana, Pa., and Greensburg were continuing to investigate after a dive team located the barrel under a bridge in the Conemaugh River, near Blairsville late Tuesday.State police have not filed charges in connection with the body, though they are treating the case as a homicide.Baker said Thursday that the remains found in the metal, 55-gallon drum had likely been there for months, but less than a year. "There was nothing there identifiable that I would be able to say for certain if it was a man or a woman," he added.

A man who sold a drink mix to help users pass federal transportation drug-screening tests while he was a pilot for US Airways Express is scheduled for sentencing in Pittsburgh.Stephen Sharp, of Port Orange, Fla., will appear before a federal judge today, where he faces up to five years in prison.Sharp pleaded guilty in April and lost his job.