WORLD NEWS: John Krasinski, Dwayne 'The Rock' Johnson take the Murph Challenge for a good cause on Memorial Day

"John Krasinski, Dwayne 'The Rock' Johnson take the Murph Challenge for a good cause on Memorial Day Two big Hollywood stars dared each other -- and their fans -- to take The Murph Challenge for a good cause on Memorial Day. Entertainment" Via FOX NEWS To WORLD NEWS