The remaining 14 Chicago area students and supervisors on a global leadership trip to Puerto Rico returned home Tuesday, four days after a global technology outage forced airlines to cancel hundreds of flights, leaving them stranded. The trip was hosted by the Gloria J. Taylor Foundation, which doled out almost $20,000 to pay for lodging, flights and food while the group was forced to stay on the island an additional four days, said Cliff Taylor, the foundation’s co-founder. The group did not receive any voucher assistance from their carrier, United Airlines, during their extended stay, but Taylor said the airline will reimburse the nonprofit group for lodging and food expenses once they send in receipts.