President-elect Donald Trump’s transition team got down to nuts and bolts Thursday, deploying “landing parties†to federal agencies responsible for national security and reportedly having offered the next administration’s first big appointment.Visits to the National Security Council and departments of Defense, Justice and State to lay groundwork for the handover in January marked a rapid acceleration in activity by the transition team, which has been criticized for the slow pace of progress in the first week after the election.The Associated Press, citing “a senior Trump official†speaking on the condition of anonymity, reported that Mr. Trump had offered the...