This is an alternate version of what happens in this story https://www.furaffinity.net/view/51031540/ and an awesome sketch Shinden drew along with my commission.

Keira filled her bag with various devices and weapons from the inflation material storage cabinet. The last thing she took was compound I-NFL83, the item her client had requested her to obtain from the big durf Shinden himself. Her ears perked up at the sound of footsteps accompanied with the unnmistakeable sound of a laser charging. Keira ducked in the nick of time the blue laser blasted the storage cabinet having no effect but leaving a black scuff mark on the once pristine metal.
Keira turned already knowing who her assailant was.
The sabretooth wolf was stunned that she had been able to dodge the blast and was preparing to fire his fwoomph ray again. Keira ran straight at him putting the flustered wolf on edge. The last light on the ray was lighting up, when Keira closed the distance kicking the ray out of his paws and sent it spinning up into the air. Keira pivoted shoving her ample booty into Shinden's somewhat pudgy gut.
"Ooooff," he mumbled as he was sent reeling back, but he regained his stance.
Keira held out her paw, the fwoomph ray fell perfectly in her grasp, the barrel now pointed at its former owner. The last light lit up on the ray. Keira smirked a feline grin.
Shinden's eyes went wide as she squeezed the trigger, blasting the durf with its green ray. FwOOOOMPH In an instant he inflated growing a few feet with his hips and butt inflating to the size of weather balloons.
"See ya wide load!" Keira called as she sped past him and out of the vault and to the exit. "And thanks for the ray gun!"
"Hey get back here!" Shinden called. He gave chase as best he could. His bottom half wobbling and bouncing after Keira as he ran as best, he could. It was a miracle he was able to squeeze his inflated butt through the vault's exit.
Keira was well over halfway to her exit, still Shinden gave chase. He wasn't out of this yet, he still had one trick up his sleeve. "Let's hope my new security system works." He pulled out a remote and pressed a button. In a matter of seconds one by one doors, windows, and even the vents sealed completely covered by a thick panel of metal that was then covered by a few more, completely sealing them in.
Keira stopped in her tracks, she growled and flicked her tail, now that her exit was cut off. Shinden continued his pursuit his huge butt still bouncing behind him as he came after Keira.
"Ha, got you! Now we'll just wait for security to...wait what are you doing?" He asked.
Keira pointed the fwoomph ray at Shinden again. Her thumb flicked the setting as high as it could go. The ray began charging growing brighter and brighter with every second.
"No don't you wouldn't!" Maybe trapping himself in here with her wasn't such a good idea.
"If I can't find an exit, I'll make one."
Shinden's howl of terror was drowned out by the sound of the ray firing. FWOOOOOOOOOOOOOOOOOOOMMMMMMMMMMMMMMPPPPPPPHHHHHHHHHHHHHHHHHHHHHHHHHHHH
It was like a flash of lightning, green light burst out from any crack or crevice it could outside the hangar. There was a second of calm before the entire hangar began trembling and shaking like an isolated earthquake was beneath it. Then the hangar began expanding, the once sealed windows burst open what looked like round gray furry balloons burst through them and continued to inflate. The hangar shook and trembled as nearly at its limit. Shinden's paws burst out first now massive and inflated, they looked like inflated rubber gloves fit for a macro. His tail while not inflated was massive like some kind of furry giant serpent bursting through the roof. His blimped up legs came next bursting out and creating massive holes. The hangar was at its limit, crumbling all around as more and more of poor Shinden burst out. The roof of the hangar was getting the worst of it, whatever it was hopelessly trying to contain was inflating larger and larger far bigger than any of Shinden's other body parts. Like two massive green blimps Shinden's butt burst through the roof, now freed from its confines they began rising in the air. The rest of his hangar crumbled around him as he floated upward revealing his overinflated blimp form. Somehow his clothes hadn't torn.
Riding on the Shindenburg was Keira who had settled on his neck and was now riding him and twirling the fwoomph ray gun.
"You make a good escape blimp you big durf. Once I cash in this heist, I think I'll fly you out to somewhere tropical for a vacation. I'll save a fortune on air fare."
Shinden stuck his tongue, that was about all he could do to show his displeasure with his fwoomphed up face.

Artwork by  shindenwolf