Ben Byer, the Chicago actor and playwright who chronicled his battle with amyotrophic lateral sclerosis (Lou Gehrig's disease) in the indie documentary Indestructible, died on July 3 at age 37. A funeral service is scheduled for 2:30 PM on Tuesday, July 8, at Shalom Memorial Park, 1700 W. Rand Road in Arlington Heights. Indestructible, a success on the festival circuit, begins its first Chicago theatrical run on Friday, July 18, at the Gene Siskel Film Center.