At 2100 hours communication requested the volunteers to respond to a residence on Old Mill Road for a person stuck in a tree. A tree climber was practicing repelling techniques when his equipment failed leaving him stuck 50 feet above the ground. Chief Dodd (330), Asst Chief Bohny (340), Ladder 342 (LT Devenney) with 4, and Res3cue (Capt Panitinni) with 3 responded to the run. Ladder 342 had to back onto the lawn to the rear of the property to reach to trapped climber. Once the ladder set up crews had the climber down shortly. Crews operated on scene for 30 minutes before clearing the call.