All: RoC Cobra Jetpack with added styrene to modify the wings

GI Joe: Resurgence
It is the year 2015. Following years of relative peace, the ruthless terrorist organization known as Cobra has resurfaced by staging several bold attacks on high profile targets all over the World. Returning to active duty, General Hawk enlists the help of his most trusted acolytes - Duke, Beachhead, Stalker and others. Together, they recruit a new group of soldiers and rebuild the World's ultimate special operations unit: GI Joe.
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Cobra SCRAMjet Pack w. Exo-Viper
The SCRAMjet is Cobra's one-man high-altitude battle jetpack. Includes air-to-air missiles and Exo-Viper Pilot.

This set is an idea that I've had kicking around since the Star Brigade Redux Group Project in 2011. At the time, I could not figure out a recipe and color scheme that I liked, so the concept got shelved. Fast forward to March this year. Bucky started talking about his project idea. I immediately started dusting off old ideas that would fit the project and a new Cobra troop type came out of it. GITrekker did a great job creating the back-story for Exo-Viper.