PORTLAND, Ore. — Across the street from where his youth soccer teams practice, Kaig Lightner stepped through a garage door behind an old industrial building on a cold Monday night in November. Car seats sat on the concrete floor in a corner. A refrigerator hummed in the back, and plywood tables lined the drab walls. Lightner and a dozen other coaches and volunteers from the Portland Community Football Club began to sort bags of flour and rice. They unpacked boxes of macaroni with jars of spaghetti sauce and set them out on the tables alongside rolls of toilet paper, bars of soap and packs of toothbrushes.