The Solar Impulse, an airplane traveling across the United States using only solar power, is in Phoenix today, after reaching Arizona from California Saturday. It took the plane about 20 hours to travel from Mountain View, Calif., near San Francisco.
The aircraft is capable of flying at night as well as in daytime; the plane had about 75 percent of its battery power remaining when it landed in Arizona.
War has brought the act of faith to the forefront for those who occupy the White House. President Lincoln famously issued a call to prayer during the Civil war. Franklin Roosevelt announced D-Day to the nation with a prayer.
Today, President Obama receives a daily spiritual meditation. The man who sends those messages is a Pentecostal minister named Joshua DuBois.
When he first moved to Washington, D.C., DuBois says he had already formed an impression about the spiritual life of the town.