that most experts say is almost certain to happen, although no one can predict exactly where or when. john blackstone will be reporting our sunday morning cover story. reporter: in california the statewide earthquake drill known as the great shakeout took on extra urgency this year. and not just because of recent big quakes in haiti, chile and china. the san andreas fault is locked and loaded and ready to rumble. reporter: california braces for the big one later on sunday morning. osgood: julie and david are two people from two first families. together they formed the union that stood the test of time. mo rocca this morning they ll be looking back. here is the bride. reporter: when david eisenhower married julie nixon, it was the union of two of the most famous political names of the 20th century. i felt like i was on her side. i think she felt she was on my side. right away. automatically. reporter: now they ve written a book about david s grandfather dwight
exactly where or when. john blackstone will be reporting our sunday morning cover story. reporter: in california the statewide earthquake drill known as the great shakeout took on extra urgency this year. and not just because of recent big quakes in haiti, chile and china. the san andreas fault is locked and loaded and ready to rumble. reporter: california braces for the big one later on sunday morning. osgood: julie and david are two people from two first families. together they formed the union that stood the test of time. mo rocca this morning they ll be looking back. here is the bride. reporter: when david eisenhower married julie nixon, it was the union of two of the most famous political names of the 20th century. i felt like i was on her side. i think she felt she was on my side. right away. automatically. reporter: now they ve written a book about david s grandfather dwight david eisenhower. later on sunday morning, when granddad is a five-star general
the cataclysmic earthquake that most experts say is almost certain to happen, although no one can predict exactly where or when. john blackstone will be reporting our sunday morning cover story. reporter: in california the statewide earthquake drill known as the great shakeout took on extra urgency this year. and not just because of recent big quakes in haiti, chile and china. the san andreas fault is locked and loaded and ready to rumble. reporter: california braces for the big one later on sunday morning. osgood: julie and david are two people from two first families. together they formed the union that stood the test of time. mo rocca this morning they ll be looking back. here is the bride. reporter: when david eisenhower married julie nixon, it was the union of two of the most famous political names of the 20th century. i felt like i was on her side. i think she felt she was on my side. right away. automatically. reporter: now they ve written a book about