When Rico encounters a napalm-spewing tanker, he performs an amazing act of bravery by jumping on to the thing, blowing a hole through its carapace with his weapon, plopping a hand grenade into the opening, and leaping off in time to watch it blow into a charred chunk of bug.
Sadly, this scene breaks believability.
The tanker is bucking far too violently to believe that Rico can stand there, balanced on his two feet, and keep firing his weapon downward toward the same spot. But technology could have solved this problem. What interface can you imagine—that is simple to convey narratively—that could brace him to the spot instantly to let perform this awesome maneuver? How could he activate it without taking his hands off of his weapon? How could he deactivate it instantly to escape to safety?
Keep in mind that it’s not enough that he just toss a technology onto the bug that cuts the hole and delivers the payload. This scene is meant to convey why Rico gets a promotion and later takes command of the Roughnecks. He has to take a risk. It has to still let him be the hero. Bonus points for using any technology concept that was already evident in the film. Extra bonus points for a quick comp. Post ideas to the comments.