Air Force One is primed to receive an upgrade that will include new refrigerators expected to cost American taxpayers nearly $24 million. The US Air Force awarded Boeing a $23.6 million contract in December to replace two of the five cold chiller units" aboard the aircraft. The $24 million contract will cover the costs of engineering support services for the new chillers - including prototype design, manufacturing and installation, according to the DOD contract. Former senior adviser to President Barack Obama Eric Schultz mocked the high price tag in a tweet on Friday, saying, "we would have been impeached." The Boeing fridge contract isn't the first time an administration has come under fire for the high cost of military aircraft upgrades - the Obama administration was pressured to scuttle plans to build a new fleet of presidential helicopters in 2009 after reports emerged that they cost at least $11 billion. When he was running for president, Trump boasted he would swap out Air Force One with his private jet and has been fiercely critical of the cost of the new Air Force One program in the past. But since taking office, Trump - like his predecessors - has traveled aboard the Boeing-made VC-25 aircraft. The Air Force announced last year that it had finalized a deal to purchase two already-built aircraft from Boeing to serve as the next generation of Air Force One. That contract is separate from the arrangement ... for upkeep of the current Air Force One fleet.