President Barack Obama walks to Air Force One with Gen. Lori Robinson, Pacific Air Forces Commander, following a refueling stop at Joint Base Pearl Harbor-Hickam in Hawaii, Nov. 16, 2014.

President Barack Obama walks to Air Force One with Gen. Lori Robinson, Pacific Air Forces Commander, following a refueling stop at Joint Base Pearl Harbor-Hickam in Hawaii, Nov. 16, 2014.

President Barack Obama and First Lady Michelle Obama, with Admiral Robert Willard, Commander, U.S. Pacific Command, leave the USS Arizona Memorial in Pearl Harbor, Hawaii, Dec. 29, 2011.

President Barack Obama and First Lady Michelle Obama, with Admiral Robert Willard, Commander, U.S. Pacific Command, leave the USS Arizona Memorial in Pearl Harbor, Hawaii, Dec. 29, 2011.

President Barack Obama and First Lady Michelle Obama talk with Admiral Robert Willard, Commander, U.S. Pacific Command, and his family, aboard the Admiral’s barge CINCPACFLT while en route to the USS Arizona Memorial in Pearl Harbor, Hawaii, Dec. 29, 2011.

President Barack Obama and First Lady Michelle Obama talk with Admiral Robert Willard, Commander, U.S. Pacific Command, and his family, aboard the Admiral's barge CINCPACFLT while en route to the USS Arizona Memorial in Pearl Harbor, Hawaii, Dec. 29, 2011.

President Barack Obama and First Lady Michelle Obama, with daughters Sasha and Malia, attend Christmas services at the Marine Corp Base Hawaii chapel

President Barack Obama and First Lady Michelle Obama, with daughters Sasha and Malia, attend Christmas services at the Marine Corp Base Hawaii chapel in Kaneohe Bay, Hawaii, Sunday, Dec. 25, 2011.

President Barack Obama makes phone calls to 10 American service members stationed around the world, from his vacation rental home in Kailua, Hawaii, Dec. 24, 2011. WHCA Presidential Communications Officer CPT Mallory Fritz and Military Aide Lt. Col. Sam Price coordinate the calls in the background.

President Barack Obama makes phone calls to 10 American service members stationed around the world, from his vacation rental home in Kailua, Hawaii, Dec. 24, 2011. WHCA Presidential Communications Officer CPT Mallory Fritz and Military Aide Lt. Col. Sam Price coordinate the calls in the background.

President Barack Obama makes phone calls to 10 American servicemembers stationed around the world from his vacation rental home in Kailua, Hawaii, Dec. 24, 2011.

President Barack Obama makes phone calls to 10 American servicemembers stationed around the world from his vacation rental home in Kailua, Hawaii, Dec. 24, 2011.

President Barack Obama looks out the windows of Air Force One with Nicky and Zachary DeParle, sons of Nancy-Ann DeParle, Deputy Chief of Staff for Policy, during the flight to Hawaii, Dec. 23, 2011.

President Barack Obama looks out the windows of Air Force One with Nicky and Zachary DeParle, sons of Nancy-Ann DeParle, Deputy Chief of Staff for Policy, during the flight to Hawaii, Dec. 23, 2011.

President Barack Obama talks with President Hu Jintao of China at the conclusion of a meeting during the APEC summit in Honolulu, Hawaii, Sunday, Nov. 13, 2011.

President Barack Obama talks with President Hu Jintao of China at the conclusion of a meeting during the APEC summit in Honolulu, Hawaii, Sunday, Nov. 13, 2011.

President Barack Obama meets with President Ollanta Humala of Peru during the APEC summit in Honolulu, Hawaii, Sunday, Nov. 13, 2011.

President Barack Obama meets with President Ollanta Humala of Peru during the APEC summit in Honolulu, Hawaii, Sunday, Nov. 13, 2011.

President Barack Obama and First Lady Michelle Obama host a dinner for leaders during the APEC summit in Honolulu, Hawaii, Saturday, Nov. 12, 2011.

President Barack Obama and First Lady Michelle Obama host a dinner for leaders during the APEC summit in Honolulu, Hawaii, Saturday, Nov. 12, 2011.