Tboh, I just noticed the message box. Kinda small for old eyes. So sorry it took so long to get back to you. Yep, its the Kaman HH-43B Husky. They were used as aircraft rescue and firefighting. They had an unusual (for American helicopters) setup. Counter rotating main rotors eliminated the need for a tail rotor. That meant all the engine power went into lift. It funny that the Soviets used this setup on several helicopters, yet this is the only use of in for ours.