Special forces of the police train for the treatment and rescue of injured persons during the Bavarian anti-terror exercise BAYTEX 2018 in Penzing near Landsberg am Lech, southern Germany, on June 19, 2018. (Christof Stache/AFP via Getty Images)U.S. President Donald Trump holds up an executive order that he signed during a meeting of the National Space Council at the East Room of the White House on June 18, 2018. He said he it to establish the Space Force, an independent and co-equal military branch, as the sixth branch of the U.S. armed forces. (Alex Wong/Getty Images)A Soyuz-2.1b rocket with the Glonass satellite blasts off from the Plesetsk launch pad in northwestern Russia. (Russian Defense Ministry Press Service via AP)Indian cadets stand onboard Indian Coast guard Ship Charlie -440 during its commissioning ceremony at a harbor in Chennai on June 14, 2108. (Arun Sankar/AFP via Getty Images)A Somali soldier holds a machine gun at Sanguuni military base, where an American special operations soldier was killed by a mortar attack on June 8, about 450 kilometers south of Mogadishu, Somalia, on June 13, 2018. (Mohamad Abdiwahab/AFP via Getty Images)An A-29 Super Tucano aircraft is sprayed with water as a welcome ritual during a handover ceremony by the U.S. organized by the Lebanese Armed Forces, at Hamat airbase, north of Beirut. (Joseph Eid/AFP via Getty Images)Yemeni pro-government forces fire a mortar round in the area of al-Fazah in Yemen's Hodeida province on June 15, 2018. Yemen's rebel chief urged his forces to fight on against pro-government troops pressing a Saudi-backed offensive to retake the key aid hub of Hodeida, as the United Nations called for the Red Sea port to be kept open. (Stringer/AFP via Getty Images)Russian honor guards march in the Hall of Military Glory at the Mamayev Kurgan World War II memorial complex in Volgograd on June 18, 2018, ahead of the 2018 World Cup match between Tunisia and England. (Philippe Desmazes/AFP via Getty Images)A U.S. soldier looks at military vehicles displayed at the Eurosatory trade show in Villepinte, near Paris, on June 11, 2018. (Gerard Julien/AFP via Getty Images)Soldiers with the 3rd Cavalry Regiment fire artillery alongside Iraqi Security Forces artillery at known locations of Islamic State militants near the Iraqi-Syrian border on June 7, 2018. (Spc. Anthony Zendejas IV/U.S. Army)Military students stand by Mirage F1 fighting jets at an Air Force officers' school before the French president's visit marking the school's 40th anniversary at the French Air Force base 721 Rochefort in Saint-Agnant on June 14, 2018. (Ludovic Marin/AFP via Getty Images)DC3 Chris McNeil, assigned to the U.S. 7th Fleet flagship Blue Ridge, walks into a simulated fire to retrieve a dummy victim. Blue Ridge has entered the final upkeep and training phase in preparation to become fully mission capable for operations. (MC3 Ethan Carter/U.S. Navy)Soldiers participate in the U.S. Army 243rd Birthday Run Celebration at Joint Base Langley-Eustis, Va., on June 14, 2018. This year’s event aimed to commemorate soldiers, families and civilians who helped keep the “Army Strong.” (Staff Sgt. Areca T. Bell/U.S. Air Force)