Many teams might be stressing in their quest for a third consecutive national title but not laid-back Southern California LOS ANGELES — Inside the lobby of Heritage Hall, under glass, sits the collection of national championship trophies won by all of the teams in the glorious past of the University of Southern California. Shining and majestic, they can almost take your breath away. Outside in front of the building, coach Pete Carroll and quarterback Matt Leinart might be on the verge of running out of breath from all the talking they are doing.On the right side of the steps,...