Really nice videos. I liked the angle of the first one. I hope you had your camera securely on the platform with no risk of getting wet by falling off or being hit by run off from the swimmer.
By the way, those aircraft look like Hawks. Hawks are used by the Finnish Airforce for training purposes. The wing shape is a dead giveaway and the engine sound is unmistakably that of a turbofan engine that are not used in fighter aircraft but typically in commercial airliners, too. Fighters have turbojets. The difference is that in turbofan engines not all of the air is charged into the combustion chamber like in turbojet engines. Turbojet engines are louder with a clearly more "brutal" sound and less economical but have higher power outputs.
The Hawk could be used in a (ground) attack role as well. It's got a 30 mm Gatling gun integrated into it. The A-10 is the most famous modern (ground) attack aircraft. The following video shows the A-10 assaulting Taliban positions in Afganistan. It sounds as if God had had pea soup for lunch at the mess hall.
Below is a video of an F/A Hornet used by the Finnish Airforce as an interceptor (= torjuntahävittäjä).