Faatumu le fuaiupu lenei: Na manumalo McMahon i pine apamemea i le 2002 FESPIC Taaloga i le 4 × 400 m relay, Men's Javelin F37 i le 2006 IPC Athletics World Championships ma Men's 4 × 100 m T35-38 i le
2011 IPC Ta'amilosaga a le Lalolagi i Ta'aloga Fa'atauva'a. I le 2006, na maua ai e McMahon le 2006 Sports Achievement Award. I le 2008 Beijing Paralympics, na ia faʻauʻuina lona fa i le Men's Javelin F37/38.