Vice President Pence announces the Trump Administration's plan to create the U.S. Space Force by 2020 during a speech at the Pentagon on Thursday. Chip Somodevilla/Getty Images hide caption
Defense Department Defense Department
Modern tools of biology could allow someone to recreate a dangerous virus, such as smallpox, from scratch. Dr. Hans Gelderblom/Visuals Unlimited/Getty Images hide caption
Report For Defense Department Ranks Top Threats From 'Synthetic Biology'
The USS Carl Vinson transits the Philippine Sea while conducting a bilateral exercise with the Japan Maritime Self-Defense Force last April in the Philippine Sea. Handout/Getty Images hide caption
Pentagon Report: Cascade Of Errors Led To Niger Ambush, Deaths Of 4 Americans
In this frame from a video, a member of the National Guard watches over Rio Grande River on the border in Roma, Texas, on Tuesday. The deployment of National Guard members to the U.S.-Mexico border at President Trump's request was underway Tuesday with a gradual ramp-up of troops under orders to help curb illegal immigration. John Mone/AP hide caption
Afghan commandos train for a night raid on a Taliban-controlled village in June 2016. David Gilkey/NPR hide caption
A floor of office space in Trump Tower, where President Trump lives with his family in a penthouse apartment, can rent for as much as $1.5 million a year. Mark Lennihan/AP hide caption
This February 2012 image shows the U.S. guided-missile destroyer Lassen. The U.S. Navy sent the warship within 12 nautical miles (about 22 kilometers) of islands artificially created by China in the South China Sea. Kyodo /Landov hide caption
Democratic presidential candidate Hillary Clinton speaks during a community forum on health care at Moulton Elementary School in Des Moines, Iowa, on Tuesday. Charlie Neibergall/AP hide caption
A view inside the Washington National Guard Army Aviation Support Facility on Joint Base Lewis-McChord in February. As Congress cuts $500 billion from the Defense Department budget, the National Guard and active Army are competing for the same dollars. Patricia Murphy/KUOW hide caption
The grave at the Manila American Cemetery and Memorial, where Bud Kelder's family believes he is buried. Courtesy of John Eakin hide caption
John Brennan, who President Obama wants to lead the CIA. Alex Wong/Getty Images hide caption