Arrived at location on 2/14/22 - Arrived on location and met with lee. Entered the church and gained access to kitchen. Inspected unit for leaks. Found evidence of combustion external to the center gas valves and pilot valve. Turned gas off to unit and removed valves. Applied sealant to threads and reassembled. Checked for leaks and lit unit. Found no further evidence for unit to be locked out. Back in service.