The Historic Church of St. Patrick will have its Wednesday evening mass in honor of two Toledo firefighters killed one month ago.The church is Toledo Fire Department's "unofficial parish," where candlelight vigil was previously held for Pvts. Stephen Machcinski and James Dickman. The two men were killed putting out a blaze at north Toledo apartment. The service begins at 5:30 p.m. at the church located at 130 Avondale.Toledo property owner Ray Abou-Arab pleaded not guilty to aggravated murder and arson charges in a Lucas County courtroom Tuesday morning. A pre-trial is set for March 20.