A seat assembly , comprising an armrest and a partition system secured to the seat assembly , wherein the partition system comprises a barrier that is configured to be moved between a stowed position and a deployed position, wherein the stowed position is proximate to a rear end of the armrest and the deployed position extends towards a front end of the armrest , wherein the armrest comprises a guide track , wherein the guide track is formed through a top of the armrest , wherein the barrier is mounted onto the top of the armrest proximate to the rear end , wherein the barrier comprises: a first panel configured to be grasped and outwardly pulled towards the front end of the armrest , whereby a base of the first panel is received and moveably retained by the guide track , which guides and stabilizes the barrier into the deployed position; a second panel , wherein the first panel is moveably coupled to the second panel , such that with continued movement of the first panel toward the front end , the second panel moves in response thereto; and a third panel , wherein the third panel is moveably coupled to the second panel , such that as the first panel and the second panel move toward the front end , the third panel moves in response thereto, and wherein the first panel , the second panel , and the third panel linearly translate over a length of the armrest between the stowed position and the deployed position. an armrest and a partition system secured to the seat assembly , wherein the partition system comprises a barrier that is configured to be moved between a stowed position and a deployed position, wherein the stowed position is proximate to a rear end of the armrest and the deployed position extends towards a front end of the armrest , wherein the armrest comprises a guide track , wherein the guide track is formed through a top of the armrest , wherein the barrier is mounted onto the top of the armrest proximate to the rear end , wherein the barrier comprises: a first panel configured to be grasped and outwardly pulled towards the front end of the armrest , whereby a base of the first panel is received and moveably retained by the guide track , which guides and stabilizes the barrier into the deployed position; a second panel , wherein the first panel is moveably coupled to the second panel , such that with continued movement of the first panel toward the front end , the second panel moves in response thereto; and a third panel , wherein the third panel is moveably coupled to the second panel , such that as the first panel and the second panel move toward the front end , the third panel moves in response thereto, and wherein the first panel , the second panel , and the third panel linearly translate over a length of the armrest between the stowed position and the deployed position. a first panel configured to be grasped and outwardly pulled towards the front end of the armrest , whereby a base of the first panel is received and moveably retained by the guide track , which guides and stabilizes the barrier into the deployed position; a second panel , wherein the first panel is moveably coupled to the second panel , such that with continued movement of the first panel toward the front end , the second panel moves in response thereto; and a third panel , wherein the third panel is moveably coupled to the second panel , such that as the first panel and the second panel move toward the front end , the third panel moves in response thereto, and wherein the first panel , the second panel , and the third panel linearly translate over a length of the armrest between the stowed position and the deployed position. <EOS>