An Indiana, Pa., man was killed Sunday in a helicopter crash near Los Angeles while working on a military-themed reality show for the Discovery Channel. Michael Donatelli, 45, was one of three people, including the pilot, who were killed in the crash, according to Los Angeles County Deputy Sheriff Jason Brandenburg. The Federal Aviation Administration and National Transportation Safety Board are investigating. The crash occurred about 3:45 a.m. on the Polsa Rosa Ranch in Acton, north of Los Angeles. Officials at the ranch declined to comment. Mr. Donatelli served four tours of duty in Iraq, worked as a Washington, D.C.,...