Great and Terrible:From the End of Heaven — Jason F. Wright

As millions of Americans face the prospect of imminent starvation, chaos and violence rule the angry streets. For some, all hope is lost as they struggle in a world suddenly turned on its head. But for those who keep their faith, hope is still alive. While Sara Brighton helps a shadow government rise to power, Sam and Bono are sent on the most dangerous military mission of their lives. Azadeh agrees to guide them through the mountains of Iran and Pakistan as they seek for the key that could save the world. Struggling against overwhelming odds, they realize the most important lesson of their time: Faith is the only thing that matters as the final day draws near.