Tess breathed out heavily, taking this at a sort of acceptance of her wordless apology.  Or maybe just him being decent, and not getting her wordless apology.  It was wordless after all.  Not like she had made her meaning clear or anything.  
"Thanks."  She said quietly, still keeping her knees tight to her chest and adjusting herself a bit so the arm around her shoulders rested more easily there.  Didn't want to strain him.

"Wait, wait what?"  Genuinely surprised by the request Marcus looked down at her with disbelief.  "Rin, we aren't going to die out here.  You don't need to worry about that,"  Shifting he slipped his arm around her waist, pressing a chaste kiss against her temple before looking back down at her.  It was odd, not that it was something he had never heard before out here.  Kyle would often order them to not die, shout at them in a middle of a fight or drag their battered bodies to their feet and hiss it into their faces.  But to have it laid out in such a clear manner by Rin's tone and look, that she didn't think she'd be able to continue without him, that pulled Marcus from his field mindset long enough to reassure her.  He had no doubt that if something were to happen to him Rin would be able to go on.  She had shown him nothing but strength and he knew that could carry her through anything.  But that wasn't the right thing to say here he figured, so instead he added "I am not going to die, and neither are you.  So don't worry about it,"

Shadows moved silently not far from them, shapeless masses of darker forms moving between sources of cover and treading on light feet.  There was no crackle of radios.  No click of tack gear.  Not even the dull shine of combat suits.  Trackers didn't wear those, trackers didn't need them.  Steadily though they drew their loose circle tighter around the small band of escapees.  Ever growing smaller, weapons raised now.  Just waiting for a signal.