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.