Cassie nodded when he said it was go time, hopping over the railing with him following close behind as they began to run toward the fence, the zombies stumbling after them the whole time. When the two of them did finally reach the fence, she went to quickly try and climb over it, only to be pushed over the top of it by Rex, yelping slightly as she caught her footing at the bottom. Rex wasn't too long in landing beside her and soon the two were off again, skirting around corners and down alleyways, when the clanking foot steps of armored aliens could be heard. But, before she could even react, she was suddenly grabbed, jerked backwards, and pushed against the wall, being given a sign by him to keep quiet, which she did. 

She was tense, listening to the foot steps as they grew closer, her eyes wide with fear as she stood there, thinking about what might happen when those aliens turned a corner and saw them. Surely they would be annihilated just like all of the zombies these aliens were going after. She stayed there against the wall, her hand on her pistol, when the aliens who were so close to catching them suddenly changed direction, going quickly down another alley to check something else out and when they were finally far enough away, she let out the breath she had been holding and the two of them continued on their way, careful to not get caught be either alien or zombie. 

Soon enough, they were at the city limits and she paused, looking back at him, "Should we grab some kind of vehicle for the journey? Or are we doing this all one foot?"