Loki sat in the car and watched them flounder around the lone survivor, he was told to stay and that is where he would be when they came back. However with hawk like eyesight he catches a glimpse of the person they'd found...
No...
It couldn't be...
He would have to switch Ant for Cockroach, as it would seem this particular insect was able to withstand buildings falling on him.
He'd have to pick a bigger building next time, it would seem mortal architecture just wasn't sturdy enough to do anything properly.