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Billy Graham visits Guatemala after a devastating earthquake in February 1976.

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MH-60R Sea Hawks attached to Helicopter Maritime Strike Squadron HSM-77 (the “Saberhawks”) hover in formation between the aircraft carrier USS Ronald Reagan (foreground) and USS Nimitz while under way in the South China Sea, July 7, 2020. The Nimitz and R

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Supreme Leader of Iran, Ali Khamenei makes a speech during his meeting with senior officials and members of the air force in Tehran, Iran on February 08, 2020. (Anadolu Agency via Getty Images)

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The Islamic organization Hizb ut-Tharir holds its Friday prayer at the Parliament Square on March 21, 2019 in Copenhagen, Denmark. The goal of Hizb ut Tharir is the implementation of the Islamic Sharia law. (Ole Jensen/Getty Images)

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A U.S. Air Force B-1B Lancer assigned to the 9th Expeditionary Bomb Squadron assigned to the 28th Bomb Wing fly a 10-hour mission from Andersen Air Force Base, Guam, into Japanese airspace and over the Korean Peninsula, July 30, 2017

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A shop for Chinese telecom giant Huawei features a red sticker reading "5G" in Beijing on May 25, 2020.

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Dr. Will Roper, Director of the Strategic Capabilities Office under the Office of the Secretary of Defense, explains U.S. military's use of the Micro UAV called Perdix at the Defense Advanced Research Projects Agency building on March 4, 2016, in Arlingto