The five American Yeshiva students from Brooklyn were driving through Hebron Thursday when they lost their way and entered a Palestinian district of the West Bank town. A mob surrounded the car, bombarded it with rocks and set it on fire with a firebomb. Three were hurt, none seriously. A Palestinian bystander rescued the five youths, hid them in his home, alerted the army and kept them safe until the soldiers arrived to collect them. Jewish residents of Hebron demand that the checkpoint at the entrance to the Palestinian neighborhood which was recently dismantled be put back.