Billionaire Elon Musk scrutinized the red tape entangling the Air Force One revamp in late December, according to people familiar with the matter. Meanwhile, Boeing Co. suffered another quarter of ...

Elon Musk has taken on a new role as the First Buddy: monitoring the progress on the long-awaited revamped Air Force One jets. The new Air Force One planes, made by Boeing, are currently $2.7 billion ...