Impulse seems to have this under control, so Flash goes to help Warp rescue people from the flames, not wanting to wait for the regular emergency services to arrive. He keeps half his attention on Heat Wave, just in case Impulse has overestimated his ability to talk the guy down. 

Heat Wave is looking a little sheepish. His hand twitches around his flamethrower, which does indeed look homemade along with the accompanying suppressant.

"Uh...yeah, I did." He peers at Impulse through his goggles. "Why do you care? And who the heck are you, anyway?"

"A superhero, obviously! Call me Impulse. I'm one of the Flash's new sidekicks. My brother Warp is off rescuing people—" he gestures in the direction of the blue-silver blur. "But I'm the friendly one so I get to talk to you. That one's the fire suppressant, right? How's it work, can I see?"

"...fine." 

Keeping a firm grip on the items in both his hands, Heat Wave begrudgingly fires a splash of suppressant towards a nearby patch of flames. It looks like the same white foam that comes out of a fire extinguisher, and is just as effective at smothering the blaze. "Happy?" he grumbles.

"Oh cool, so—" and he's off into a sharp-eyed technical analysis of the functioning of both gadgets, brimming with obvious admiration for their design and construction.

Heat Wave's annoyance at the interference gradually subsides in favour of bemused delight at the interest Impulse is taking in his work. 

After a while of this, though, he interrupts Impulse to demand, "What's the catch?" 

(Meanwhile, Flash and Warp have removed everyone else from the danger zone, and a firetruck has arrived to deal with the blaze.)

"...what do you mean?"

"You're a hero," he accuses, spitting out the word like it's an insult.

"Heroes don't do this, not unless they're planning somethin' else and stalling. So - what've you got up your sleeve?"

"It's my first day heroing, maybe I'm not very good at it yet. I'm supposed to get you to stop setting things on fire so Warp can rescue everybody, and doing that by geeking out about your awesome flamethrower setup seemed like more fun than most other ways I could've managed it? Does that qualify as a catch?"

That actually surprises a laugh out of him. "You're alright, kid." 

He glances around nervously, noticing the presence of emergency responders and trying to track the twin blurs of the other two speedsters. 

"Might be time for me to go, I'm thinkin'. You gonna try and stop me?"

"Nope. Bye! Please try to cause less public mayhem in the future!"

He snorts and scarpers, clearing a path for himself through the remaining flames. 

Flash comes to a halt next to Impulse. "How'd it go?" 

"I like him! I have high hopes for eventually convincing him to indulge his love of flamethrowers more responsibly!"

"Well, I wouldn't bet against you." 

...aaaand the news vans have arrived. "Do you two want to be on local, maybe national, television as my new sidekicks, or would you rather skip it?" 

"Kind of rather skip it for now," says Warp.

Flash nods. 

"Find somewhere out of sight to wait for me. I probably won't be able to avoid mentioning you entirely, but I can go heavy on the 'no comments' if you like." 

"Sure. See you."

Off they zip.

Flash knows how to talk to the media. "...and I would like to commend the prompt response of the fire crew..." He can almost do this on autopilot now. Smile, wave, don't take all the credit...

The reporter asks him about Impulse, who was clearly visible during his conversation with Heat Wave. Is he a new hero? A new villain, working with Heat Wave to keep him out from behind bars?

"The individual concerned is not a supervillain," Flash begins. He guesses Impulse won't mind him confirming that one. "They were assisting me in de-escalating the situation by distracting Heat Wave." To the following barrage of questions (What are their powers? Their superhero name? Is this another speedster? Are you working together?) he mostly answers "No comment."

Once the reporter is finally placated and the cameramen have left, he looks around for his still-just-about-secret sidekicks. 

"Hi. How'd it go?"

"They asked me about you; Warp seems to have gone unnoticed in the confusion and I didn't correct them," Flash recounts.

"I confirmed that you were on my side rather than Heat Wave's, but didn't give them any more details. People do seem to have noticed that you're a speedster, though, and it probably won't take much for them to put the pieces together."

"That's fine. I don't mind publicity eventually, we just didn't want it today."

Flash nods.

They move on. The rest of their patrol is uneventful, and they eventually circle back to the zeta-tube. 

"Back to Toronto for all of us, I think?" He gestures for the boys to go first. 

"Yep!"

*RECOGNIZED: IMPULSE, B-04*

*...WARP, B-05*

*...FLASH, 04*

Flash blurs around the corner and comes back dressed in civvies: a shirt, tie, and red sweater vest. 

Impulse and Warp likewise get into their civvies, and then they lead Flash - or, rather, Barry - home to where their mother is waiting.

"Hi Mom, look what we found!"