Members of the public carry umbrellas as they line up to pay their respects to Sen. John McCain during a viewing at the Arizona Capitol on Wednesday, Aug. 29, 2018, in Phoenix. Thousands of people paid their respects to U.S. Sen. John McCain on Wednesday, standing for hours in the broiling Arizona sun before filing past the flag-draped casket that his tearful wife, Cindy, lovingly pressed her face against after a ceremony for the former North Vietnam prisoner of war who represented Arizona for decades. AP Photo/Jae C. Hong

Members of the public line up to pay their respects to Sen. John McCain during a viewing at the Arizona Capitol on Wednesday, Aug. 29, 2018, in Phoenix. Former military members in shorts and T-shirts stopped and saluted the closed casket flanked by National Guard members at the Arizona Capitol. Families with small children came by, and several people placed their hand over their heart or bowed, including Vietnamese-born residents who traveled from Southern California. AP Photo/Matt York

A volunteer stocks water in ice for people waiting in line to play their respects to Sen. John McCain during a viewing at the Arizona Capitol on Wednesday, Aug. 29, 2018, in Phoenix. The private service held earlier marked the first appearance of McCain's family since the Republican senator died Saturday of brain cancer. It also began two days of official mourning in Arizona before his body is taken to Washington for a viewing at the U.S. Capitol, followed by burial at the U.S. Naval Academy in Annapolis, Maryland. AP Photo/Matt York

A woman drinks water while waiting in line to pay their respects to Sen. John McCain during a viewing at the Arizona Capitol on Wednesday, Aug. 29, 2018, in Phoenix. At the emotional private ceremony in Arizona, Gov. Doug Ducey remembered McCain as an internationally known figure and "Arizona's favorite adopted son" on what would have been his 82nd birthday. He was born in the Panama Canal Zone while his father, who went on to become an admiral, served in the military. AP Photo/Matt York

Members of the public pay their respects near the casket of Sen. John McCain during a viewing at the Arizona Capitol on Wednesday, Aug. 29, 2018, in Phoenix. Thousands endured triple-digit heat Wednesday and waited in long lines outside the Arizona Capitol to attend a public viewing honoring the late Sen. John McCain. AP Photo/Ross D. Franklin

Members of the public line up to pay their respects for Sen. John McCain during a viewing at the Arizona Capitol on Wednesday, Aug. 29, 2018, in Phoenix. The public viewing followed the emotional private ceremony attended by the McCain family and drew a mix of people Republicans and Democrats, Arizonans and Californians. Some of them had met McCain. Those who didn't know him still felt a need to attend. AP Photo/Matt York