Boeing has been contracted to construct a pair of Air Force One replacement jets, but the project has fallen far behind schedule.

Since his first administration, Donald Trump has obsessed over replacing Air Force One. However, delays with the contracted Boeing have pushed delivery back by another decade. Now, Trump’s impatience is showing as he’s commissioned an interim plane from another contractor on top of the existing multi-billion contract with Boeing.

President Donald Trump is willing to fly on a secondhand jet if it means he can have a modernized Air Force One by the fall, sources told The Wall Street Journal. Trump has reportedly grown frustrated with Boeing‘s years-long delays in delivering a pair of new jets for the executive branch’s use,