Clint and Natasha awkwardly changed into the clothing Maria had brought for them; Natasha ended up wearing a top as a dress because the pants were just too big to stay up, while Clint wore some female gym clothes, and although they were too big; they would do for now. Tony considered phoning Pepper so she could get some supplies in, but he really wanted to see her face if they just turned up with them like this...

The doctors ran their tests; it had taken both Steve and Tony's best efforts to keep them calm and compliant during the medical exam, well; mainly Natasha. Clint didn't seem to mind all that much and normally ended up being used as a demonstration so the doctor could inform Natasha of what exactly they'd be doing. She was rather reluctant to allow any medical tests to be performed and it took them a long time to talk her round.
In the end they summarized the two children were relatively healthy, and after taking a few viles of blood they were free to leave.

"We're going to go home now, okay?" Steve told them gently.

"Who's home?" Clint asked sceptically.

"Ours" Steve smiled, gesturing between himself and Tony.

"Are you guys like, together?" Clint asked with a cheeky smile.

"God no!" Tony exclaimed "You'll meet my girlfriend when we get there"

"Why are we going there?" Natasha asked, breaking her long silence.

"It's safer" Tony told her, just as the security alarm went off again.

"Fury?" Steve asked down the coms, moving instinctively closer to the kids.

"Rogers, Stark; get them out of here. We have a breach"

They glanced at each other quickly before snapping into action.

"We have to get out of here, fast. Alright?" Steve told Clint and Natasha, who nodded in agreement; despite the fact neither were looking at him. They were both already working a way out of there; Clint's eyes had darted up towards the air vents, while Natasha was scanning the room for weapons; unfortunately, they were in short supply in the medical bay...

Steve reached up and pulled the vent cover off and lifted Clint in, he grabbed Natasha (who was less than impressed) and lifted her up too, before gesturing to Tony.

"I'll meet you at the tower" he informed him as Tony dragged over a chair to climb up to the vent; he drew the line at being picked up by Captain America.

"You're not coming with us?"

"There's no way I'll fit in there, just go. And don't lose them!"

Tony crawled hurriedly after Clint and Natasha, who moved swiftly and silently, and Tony struggled to keep up. Natasha had to shush him several times as his hands and knees made too much noise.

It seemed like they'd been crawling for ages when the kids paused in front of him;

"What are you-" Tony began, but stopped when two sets of eyes glared at him. Peering through the grate to the room below; he saw a group of shield agents being held hostage by several armed hydra agents;

"Tell us where the kids are and we'll allow you to live"

The shield agents were silent, refusing to answer. Tony saw Natasha glance guiltily to Clint, who wore an expression of quiet anger which looked so much like his older self it was unnerving.

"What do we do?" Clint whispered to Tony

"Keep going" he told him, feeling awful about leaving the agents, but he couldn't do much without his suit, and he definitely couldn't leave the kids alone and defenceless when hydra were after them...

As Clint slid forward, the grate (which apparently hadn't been fitted properly) fell through, taking Clint with it to the floor.

"Oh shit!" Tony exclaimed, informing Natasha to stay where she was while he jumped down beside Clint.

The hydra agents jumped into action immediately and lunged forward, Tony got in a good punch here and there, and Clint was a fairly good fighter for a ten year old. But they were outnumbered, the shield agents were tied up, and Tony could only watch in horror as one of the agents raised their guns and aimed it at the air ducts where Natasha was still hiding.

She jumped down from the vents, landing gracefully beside Tony just as Steve stormed in; taking out the guy with the gun and quickly dispatching the other hydra agents. He'd apparently picked up his shield on the way up here...

Steve moved to free the shield agents, while Tony looked the kids over; Clint was bruised and breathing heavily, while a trail of blood ran down Natasha's arm.

"Oh my God Nat are you shot?!" Tony asked dramatically

"It's fine" she insisted, pushing his hand away as he tried to stop the bleeding

"Natasha-"

"I've had worse. We need to keep moving"

"No, we're good. That was the last of them" Steve informed him, looking carefully at Clint's swollen eye "Maybe we should head back up to medical?"

"Yeah, and then we should really get to the tower" Tony answered.