A humanitarian convoy carrying Irish-donated ambulances to Uganda has drawn a midlands garda sergeant into a mission aimed at easing suffering for some of east Africa’s most vulnerable patients. Organised by Hope on Wheels, the effort has brought together more than 20 volunteers to drive 11 ambulances 1,200km from Mombasa in Kenya to Kampala in Uganda. Among them is Sergeant Paul McNally, a Co Offaly native who has been based in Athlone since 2018. "When I heard about this opportunity I didn't hesitate," he said. "Thousands…