She would have to be dense to miss the concern in Jack's voice -- and to be fair, he has every right to worry. The accelerator was as perfect as technology could get, but messing with time was no surefire solution to any injury. She had to be quick and she usually was, but nothing going on around them was normal.

And if Lena had to be honest, not much had gone right with the mission yet either. Expecting the worst was probably the safest attitude.

"I'm right as rain, love," she offers, turning to continue onward as instructed. She doesn't go all that far ahead of him though, her own brows pinching lightly when she notices him panting. Maybe her joke wasn't all that much of a joke after all -- she couldn't remember the last time she'd seen Jack look exhausted. "Did they get you?"