Trump's $440 billion weapon, Politico
"What Trump is doing, by targeting specific companies or specific federal contracts, is new and unprecedented, experts said. "Never seen anything like this," said Sean O'Keefe, a former secretary of the Navy and comptroller of the Defense Department. ... But political appointees are traditionally loyal to the president and civil servants would risk their career if they were to not fall in line. That means, in practice, contracting officers are likely to acquiesce. "They can choose to say, 'I refuse to do that,'" said O'Keefe, "and then obviously they find themselves counting barrels of fuel in Beirut or something after it's over."