Does our first green president really need a fleet of 28 $400 million fossil-fueled helicopters?

Obama confronts a choice on copters - International Herald Tribune

WASHINGTON: President Barack Obama has slammed high-flying executives traveling in cushy jets at a time of economic turmoil. But soon he will have to decide whether to proceed with some of the priciest aircraft in the world — a new fleet of 28 Marine One helicopters that will each cost more than the last Air Force One.
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Equipped to deflect missile attacks and capable of waging war from the air, the new VH-71 helicopters would fly farther, faster and more safely than the current decades-old craft. But each improvement pushes up the cost. The program's original $6.1 billion contract has ballooned to $11.2 billion, and the Pentagon notified Congress last month that it was so far over budget that the law required a review. The Obama administration now must determine if the project is essential to national security and if there are alternatives that would cost less.
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When a president is aboard one of the helicopters it goes by the radio call sign Marine One. The helicopters typically ferry a president from the White House to Andrews Air Force Base or Camp David, usually accompanied by one or two helicopters carrying staff members and serving as decoys. Helicopters are also sometimes airlifted to the president's stops around the world for shorter-range flights.
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Divided by 28 helicopters, the overall cost works out to $400 million per aircraft, roughly the same as the $410 million that the government paid in 1990 for the latest two Air Force One jetliners plus a hangar.

How many helicopters did Lincoln have?