New York, Then MIT Campus; Open
Marty Pino, events as of late not withstanding, was by no means a stupid man. So when the portal appeared, he took off for it at a run. Behind him, he could hear Flack cursing. He didn't care, though; by the time Flack could catch up to him, he'd be through the portal.
"Marty! Stop!"
That was from Sid. Sid, who'd been so visibly disgusted by the full truth of what Marty had done. And yet Marty had a split second of wanting to turn back. That urge quickly disappeared, though.
Before he could think anything beyond a less-than-split-second goodbye to his late wife, Marty was launching himself into the portal...
... and landing hard on concrete Cold, wet concrete, but still concrete.