South Korea is about to induct four modified C-130s into service. The program to upgrade the aircraft so that they can deploy special operation troops behind enemy lines has been delayed since 2007.
By 대한민국 국군 Republic of Korea Armed Forces (2012년 3월 해병대 쌍룡연합훈련(3)) [CC BY-SA 2.0], via Wikimedia Commons
According to the news article, the delay was due to the cargo plane’s radar inability to detect land features.