Regarding the Buffalo specifically, when I was a boy the Spanish air force used to have Caribous, which were the predecessor of the Buffalo. Our planes have been following the doctrine of the Caribous and the Buffaloes. They are very similar, except they have been designed 40 years later.
Basically it's a plane with stall characteristics, capable of landing on unpaved runways with very low stall speed. They're a little bit bigger. They're pressurized and they have a higher speed than the Buffalo, but basically the philosophy and the concept of the Buffalo is inherited by our planes.
Regarding the C-130 Hercules, we like to say they are complementary. The U.S. Coast Guard is using the Hercules and CN-235 for different missions.