Vietnam War veterans ride their motorcycles as they lead the buses carrying Vietnam POWs to celebrate the 40th reunion at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
Vietnam War veteran Paul Holmes salutes as he watches some 200 Vietnam POWs arrive to celebrate their 40th reunion at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
Former Vietnam POW Mike Brazelton, center, poses in front of a Pulitzer prize winning photo showing released prisoner of war Lt. Col. Robert L. Stirm being greeted by his family at Travis Air Force Base in Fairfield, Calif., as he returns home from the Vietnam War at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
Former Vietnam POW Orson Swindle, right, gets a hug from Jim Janeway as he arrives to celebrate the 40th reunion for Vietnam POWs at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
FILE - In this Sept. 14, 1973 file photo, released prisoner of war John McCain is greeted by President Richard Nixon, left, in Washington. McCain spent more than five years in a Vietnamese prisoner of war camp before he was released in March of 1973. On Thursday, May 24, 2013, some 200 former POWs, almost all of them former pilots, will reunite for a three-day celebration at the Richard Nixon Presidential Library & Museum in Yorba LInda, Calif., that coincides with the 40th anniversary of a star-studded White House dinner hosted by President Nixon to honor their sacrifice. At the time, Nixon was embroiled in Watergate, but the former prisoners, now in their 60s and 70s, credit him with their freedom and have no qualms about expressing their loyalty for the 37th president. (AP Photo, File)
FILE - In this March 29, 1973 file photo, Unidentified U.S. prisoners of war stand in the courtyard of Hanoi's POW camp at Nga Tu So street waiting for an inspection of the camp by joint military and international control and supervision commissions. On Thursday, May 24, 2013, some 200 former POWs, almost all of them former pilots, will reunite for a three-day celebration at the Richard Nixon Presidential Library & Museum in Yorba LInda, Calif., that coincides with the 40th anniversary of a star-studded White House dinner hosted by President Nixon to honor their sacrifice. At the time, Nixon was embroiled in Watergate, but the former prisoners, now in their 60s and 70s, credit him with their freedom and have no qualms about expressing their loyalty for the 37th president. (AP Photo/Horst Faas, File)
FILE - In this March 29, 1973 file photo, Unidentified U.S. prisoners of war stand in the courtyard of Hanoi's POW camp at Nga Tu So street waiting for an inspection of the camp by joint military and international control and supervision commissions. On Thursday, May 24, 2013, some 200 former POWs, almost all of them former pilots, will reunite for a three-day celebration at the Richard Nixon Presidential Library & Museum in Yorba LInda, Calif., that coincides with the 40th anniversary of a star-studded White House dinner hosted by President Nixon to honor their sacrifice. At the time, Nixon was embroiled in Watergate, but the former prisoners, now in their 60s and 70s, credit him with their freedom and have no qualms about expressing their loyalty for the 37th president. (AP Photo/Horst Faas, File)
FILE - In this May 24, 1973 file photo, President Richard Nixon gives thumbs up as he addresses about 450 former POWs and their guests at a White House dinner in Washington, DC. On Thursday, May 24, 2013, some 200 former POWs, almost all of them former pilots, will reunite for a three-day celebration at the Richard Nixon Presidential Library & Museum in Yorba LInda, Calif., that coincides with the 40th anniversary of that star-studded White House dinner hosted by President Nixon to honor their sacrifice. At the time, Nixon was embroiled in Watergate, but the former prisoners, now in their 60s and 70s, credit him with their freedom and have no qualms about expressing their loyalty for the 37th president. (AP Photo, File)
Former Vietnam POWs and their guests arrive to celebrate the 40th reunion for Vietnam POWs at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
Vietnam War veteran Tedd Hybbert salutes as he watches some 200 Vietnam POWs arrive to celebrate their 40th reunion at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
FILE - In this March 4, 1973 file photo provided by the U.S. Air Force, cheers, shouts, thumbs up, "V" signs and general jubilation shows in the expressions of the released POWs as their C-141 plane lifts off from Gia Lam Airport taking them to Clark Air Base in the Philippines On Thursday, May 24, 2013, some 200 former POWs, almost all of them former pilots, will reunite for a three-day celebration at the Richard Nixon Presidential Library & Museum in Yorba LInda, Calif., that coincides with the 40th anniversary of a star-studded White House dinner hosted by President Nixon to honor their sacrifice. At the time, Nixon was embroiled in Watergate, but the former prisoners, now in their 60s and 70s, credit him with their freedom and have no qualms about expressing their loyalty for the 37th president. AP Photo/USAF, File)
A surfer carries his board on the beach in Huntington Beach, Calif., Friday, May 24, 2013. AAA expects 31.2 million Americans to hit the road this weekend, virtually the same number as last year. Throw in planes, trains and buses, and the number of travelers will drop about 1 percent, AAA says. (AP Photo/Jae C. Hong)
Vietnam War veteran Tim Hertel stands in front of a POW-MIA flag during the 40th reunion for Vietnam POWs at the Richard Nixon Presidential Library & Museum in Yorba Linda, Calif., Thursday, May 23, 2013. (AP Photo/Jae C. Hong)
FILE - This March 17, 1973 file photo shows released prisoner of war Lt. Col. Robert L. Stirm being greeted by his family at Travis Air Force Base in Fairfield, Calif., as he returns home from the Vietnam War. In the lead is Stirm's daughter Lori, 15; followed by son Robert, 14; daughter Cynthia, 11; wife Loretta and son Roger, 12. On Thursday, May 24, 2013, some 200 former POWs, almost all of them former pilots, will reunite for a three-day celebration at the Richard Nixon Presidential Library & Museum in Yorba LInda, Calif., that coincides with the 40th anniversary of a star-studded White House dinner hosted by President Nixon to honor their sacrifice. At the time, Nixon was embroiled in Watergate, but the former prisoners, now in their 60s and 70s, credit him with their freedom and have no qualms about expressing their loyalty for the 37th president. This photo won the Pulitzer Prize for News Photography in 1973. (AP Photo/Sal Veder, File)
