President Obama pauses after answering questions from the news media during his meeting with Baltic leaders at the White House on Friday. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

Blair Cook and his sons, Dalton and Keegan, set out to hike Piestewa Peak in Central Phoenix. Peter O'Dowd/NPR hide caption

itoggle caption Peter O'Dowd/NPR