Panettiere arrives with a smile at Los Angeles International Airport. Plus: Reese & Jim, Salma Hayek, The Smith family and more

COUNTRY STRONG

They're here to help! PEOPLE cover boy Blake Shelton and Voice co-judge Usher join forces Wednesday night for the "Healing the Heartland" relief benefit concert in Oklahoma City, Okla., where a roster of singing stars performed to raise funds for those affected by the recent tornadoes.