Under Trump, future of U.S. nuclear arsenal slowly taking shape

U.S. President Donald Trump shouts to answer reporters' questions over the helicopter noise as he departs for a weekend retreat with his cabinet at Camp David, from the White House in Washington, U.S., September 8, 2017. REUTERS/Jonathan Ernst

JULIETT-01 MISSILE ALERT FACILITY (Reuters) - About 70 feet (21 m) below ground, in a shielded military capsule that can launch nuclear missiles, 23-year-old 2nd Lieutenant Tia Hewuse is concerned that Americans have the mistaken impression that her mission is a gloomy one.

"America doesn't understand what we do," says Hewuse, whose post sits below a tiny U.S. base surrounded by vast expanses of windswept North Dakota farmland.