GLENWOOD, Iowa (AP) — A jury has convicted a 36-year-old Glenwood man of murdering his 5-month-old son. Jason Curtis was convicted Tuesday of first-degree murder and child endangerment causing death. Officials say Curtis called for help on July 14, 2011, because his son was barely breathing. When emergency crews arrived they found the child unresponsive. He was pronounced dead at a Council Bluffs hospital. An autopsy showed Jackson died of head trauma. First-degree murder carries a mandatory life sentence without the possibility of parole. Sentencing is scheduled for April 3rd.