Palestinians plan to engulf the Gaza border with smoke and flames from thousands of burning tires on Friday as Israel holds firm to its order to shoot any protesters who come close to the security barrier. In the past several days, groups of young Gazans have been collecting old tires around the Strip and bringing them to the border. Palestinians intend to light the tires on fire to blur the vision of the soldiers on the Israeli side of the security fence, according to a Gaza-based source familiar with preparations for what he called “the Friday of Old Tires.