Yoko's been fumbling in the aftermath of an echo--a big one--and kind of huddling out of the way, trying to get a handle on it so she isn't even more of a liability. She's got the reflexes of a soldier, the strength and the speed, but nowhere in there are the fighting skills she remembers training for. She finally gets her head under control, and activates her suit with an only half-embarrassed "Let's morphin'!".

She's leaning out from a hallway, looking for the best way to run distraction--she's fast, after all--when she sees Jin. Then, a beat later, she sees him get hit with the chair, and go down. Any self-preservation gets shoved down, and she leaps over a couple jagged pieces of furniture. "Dad!" she calls, as she gets down on his level and puts her gloved hand on his shoulder.

She needs to get him out of the line of fire, and quickly, if the way he reacted to hitting his knee meant what she thought it did. "Dad, are you okay?" A dumb question, as soon as she asks it--obviously not. "Can you walk?" she tries, instead. She could carry him, she thinks, no problem.