Planning for a war with China has dominated Pentagon thinking for decades, well before a possible confrontation with Beijing became more conventional wisdom on Capitol Hill. The United States has built its Air Forces, Navy and Space Forces — and even more recently its Marines and Army forces — with a possible fight against China in mind.

Billionaire Elon Musk arrived at the Pentagon on Friday morning for expected meetings with senior U.S. military leaders as the close ally of President Donald Trump makes sweeping cuts to the U.S. government.

It hasn’t been a good week for Tesla stock (TSLA) — or a good month, for that matter. The electric vehicle (EV) producer has been mostly trending downward for weeks, occasionally garnering some slight momentum but never enough for it to stay in the green for long.