The leadership of the opposition New Patriotic Party (NPP) has expressed worry over how the ruling National Democratic Congress (NDC) as part of their crude and diabolic strategies to achieve the agenda 50-50 projects are buying airtime on some radio stations in the Eastern Region to tarnish the image of the flagbearer of the NPP, Nana Addo Dankwah Akuffo-Addo, in his hometown region.