"Right, so." Flash thinks carefully about how to put this, not wanting to offend them.

"I don't feel comfortable letting two boys under eighteen run around fighting crime with just each other for backup," he says, measuring each word, "even if you do have superspeed. So...how would you like to be my sidekicks? Just for a few months, so I can be sure you know what you're doing, and maybe teach you a few things."

And keep an eye on them to make sure they're not going to abuse their powers, not that he'll tell them that part. 

"Sure, that sounds awesome," says Impulse.

"Oh, this is gonna be fun," says Warp, with moderate irony.

"Great! I look forward to working with you." 

Uh, he should probably be responsible here...

"But, ah, you should maybe get your parents' permission first. Or your guardians. I don't have to meet them if you want to preserve your secret identities, but it seems only polite to let them know what you're doing."

"Way ahead of you."

"I mean, if you want us to specifically ask our parents or guardians 'hey, can we go be the Flash's sidekicks for a while', I admit we didn't think of that one in advance, but we've been open from the beginning about our ambition to be superheroes."

Flash grins in approval.

"Very sensible. Now, as to how we're going to stay in touch..." 

He roots around in various pockets - all cleverly hidden and streamlined to look like part of his suit - until he finds the one containing his backup earpiece.

"Unfortunately I only have one spare communicator right now, so you'll have to share until I can bring you another one. We can call each other like so - " and he quickly demonstrates how the earpieces work, simultaneously reconfiguring the backup so it can only send and receive calls with him, rather than the entire Justice League.

"Ooh, gadgets," says Impulse, bouncing excitedly.

Warp pays attention too, but less with the radiant glee.

Flash hands the earpiece to Impulse.

"I'd tell you not to take it apart to see how it works, but I have a feeling that would just make you more likely to do it," he says. "Also, you'd probably put it back together better, judging by last time."

"Oh, good, you're getting the picture," says Warp.

"I'll at least try to hold off until it's no longer my only line of communication with you short of waiting for you to stalk us again, that seems like the mature responsible thing to do."

He sighs. "I wasn't stalking you, okay?"

Scratching the bridge of his nose, he continues, "I'm monitoring every seismograph on the planet, including ones sensitive enough to catch your little faster-than-sound jaunt on the way here. Cross-referencing with flight paths rules out regular supersonic aircraft, which means any other sonic booms are either unauthorized flights, or...speedsters."

He stops, and coughs. "Er...sorry. Little too much detail there. But you get the picture." 

Impulse bounces again. "No, that's not too much detail, that's awesome."

"So, anyway," he continues a little awkwardly.

"We should probably arrange a training session or two, see how we work together before we get into a real fight. In fact, if you have time now, I'd like to see what the pair of you can do."

"Definitely!"

"If you have a better place for that than this random pond in the middle of nowhere, I should probably grab our stuff and call home," says Warp.

Flash grins.

"The Justice League has a facility in Nevada with a ridiculously long racetrack and remote-controllable obstacles and environmental effects. There's a zeta-tube entrance in Toronto that'll take us straight there."

He hops from one foot to the other. "When you're ready to go, we can race to Toronto as a warm-up. I reckon about two minutes at my normal running speed." 

Warp giggles, and zips over to retrieve a backpack that's hanging from a tree about a hundred meters away. There turns out to be a cellphone in it.

"Hi Mom! The Flash showed up." Pause. "Yes, obviously." Pause. "Yeah, so he wants to know if our parents or guardians are cool with us being his sidekicks for a while." Pause. "I figured. And he's gonna take us to a Justice League training facility so we can show off." Pause. "Uh-huh!" Pause. "Love you too, bye."

(Meanwhile, Impulse bounces.)

While Warp is calling his mom, Flash pulls up a virtual map of Toronto and shows Impulse the location of the zeta-tube. 

"I have a feeling you two might be faster than me, but wait somewhere sensible if you get there first, alright? You'll need me to grant you authorization before the security system will let you through, and we don't want to draw attention to the location by having a couple of superheroes hang out next to it in full costume." 

"Of course!"

Warp glances at the map, puts the phone away, tosses the backpack to his brother, and while it's in the air says, "Cool, let's go," and zips off.

Flash wastes about half a second laughing at himself for not seeing that coming, then collects himself and sets off in pursuit. 

His acceleration is better than theirs, through years of practice, and he looks set to catch up with Warp despite the head-start.

Impulse meets the backpack in the air and sets off as fast as he can go, but still lags noticeably behind the other two. He doesn't seem upset about his brother's flagrant cheating; in fact he's laughing.