Armed forces

President Donald Trump salutes as a U.S. Navy carry team moves a transfer case containing the remains of Scott A. Wirtz, Saturday, Jan. 19, 2019, at Dover Air Force Base, Del. According to the Department of Defense, Wirtz, a civilian and former Navy SEAL from St. Louis, Mo., was killed Jan. 16, 2019, in a suicide bomb attack in Manbij, Syria. (AP Photo/Patrick Semansky)

This Monday, Jan. 14, 2019 photo released by U.S. Customs and Border Protection shows some of 376 Central Americans the Border Patrol says it arrested in southwest Arizona, the vast majority of them families, who used short holes dug under a barrier to cross the border in multiple spots about 10 miles east of San Luis, Ariz. The unusually large group was almost entirely from Guatemala. (U.S. Customs and Border Protection via AP)

This photo provided by the U.S. Navy shows Navy Chief Cryptologic Technician (Interpretive) Shannon M. Kent, 35, of Pine Plains, N.Y. Kent was killed in a suicide bomb attack claimed by the Islamic State group in Syria, Wednesday, Jan. 16, 2019. Pentagon officials say four Americans killed in the northern Syrian town of Manbij. The attack also wounded three U.S. troops and was the deadliest assault on U.S. troops in Syria since American forces went into the country in 2015. (U.S. Navy via AP)

FILE - In this Jan. 9, 2019, file photo, a man throws a ball for his dog next to the border wall topped with razor wire in Tijuana, Mexico. In his demands that Congress set aside $5.7 billion for a border wall, President Donald Trump insists a physical barrier would stop heroin entering the U.S. from Mexico. But U.S. statistics, analysts and testimony at the trial of drug kingpin Joaquin "El Chapo" Guzman in New York show that most hard drugs entering the U.S. from Mexico come through land ports of entry staffed by agents, not open sections of the border. (AP Photo/Gregory Bull, File)

File-In this Dec. 13, 2018, file photo, teen migrants walk in line inside the Tornillo detention camp in Tornillo, Texas. Government investigators say many more migrant children may have been separated from their parents than the Trump administration has acknowledged. (AP Photo/Andres Leighton, File)

FILE - In this Jan. 1, 2019, file photo, flanked by first lady Michelle Bolsonaro, Brazil's President Jair Bolsonaro waves as he rides in an open car after his swearing-in ceremony in Brasilia, Brazil. The far-right leader’s first two weeks on the job have been filled with missteps and communication gaffes and little of his promised sweeping changes, underscoring a steep learning curve for a president elected on promises to overhaul much of daily life in Latin America's largest nation. (AP Photo/Andre Penner, File)

TSA employee Gary Vetterli prepares a hot dog during lunch at Salt Lake City International Airport, Wednesday, Jan. 16, 2019, in Salt Lake City. The government shutdown has generated an outpouring of generosity to TSA agents and other federal employees who are working without pay. In Salt Lake City, airport officials treated workers from the TSA, FAA and Customs and Border Protection to a free barbecue lunch as a gesture to keep their spirits up during a difficult time. (AP Photo/Rick Bowmer)

FILE - In this Jan. 8, 2019, file photo, a man holds on to the border wall along the beach, in Tijuana, Mexico. The migrant caravan that was seized upon by U.S. President Donald Trump in the run-up to the 2018 election has quietly dwindled to a few hundred people, with many of them having crossed into the U.S. or put down roots in Mexico. (AP Photo/Gregory Bull, File)

FILE - In this Jan. 3, 2019, file photo, President Donald Trump, left, listens as Brandon Judd, president of the National Border Patrol Council, talks about border security after making a surprise visit to the press briefing room of the White House in Washington. Trump and Judd share an ominous view of the southern border and a certainty that a wall along the boundary is urgently needed to stop what they’ve described as a humanitarian crisis. Judd, a 21-year veteran of the U.S. Border Patrol, has helped to validate Trump’s fiery immigration rhetoric and affirm the president’s conviction the border with Mexico is a frequently lawless place. (AP Photo/Jacquelyn Martin, File)

FILE - In this Tuesday, Dec. 18, 2018, file photo, acting EPA administrator Andrew Wheeler speaks in Lebanon, Tenn. Wheeler and Agriculture Secretary Sonny Perdue met with farmers about a new Trump administration proposal to redefine "waters of the United States." Trump often points to farmers as among the biggest winners from the administration’s proposed rollback of federal protections for wetlands and waterways across the country. But under longstanding federal law and rules, farmers and farm land already are exempt from most of the regulatory hurdles on behalf of wetlands that the Trump administration is targeting. (AP Photo/Mark Humphrey, File)