Help Arizona kids get the supplies they need to succeed this school year by joining KEZ and Fox 10 in supporting The Salvation Armyâs âBackpack S-O-Sâ drive. The S-O-S stands for âSupport Our Students.â You can donate backpacks and school supplies at any Fryâs Food Store or B-O-K Financial location July 12ththrough July 30th. You can also visit SalvationArmyPhoenix.org to make a monetary donation to the campaign.