The Miami Herald reports: Guards get combat pay, just like troops in Afghanistan, without the risk of being blown up. Some commanders get to bring their families to this war-on-terror deployment. And each captive gets $38.45 worth of food a day.

The Pentagon detention center that started out in January 2002 as a collection of crude open-air cells guarded by Marines in a muddy tent city is today arguably the most expensive prison on earth, costing taxpayers $800,000 annually for each of the 171 captives by Obama administration reckoning.

That’s more than 30 times the cost of keeping a captive on U.S. soil.

It’s still funded as an open-ended battlefield necessity, although the last prisoner arrived in March 2008. But it functions more like a gated community in an American suburb than a forward-operating base in one of Afghanistan’s violent provinces.

Congress, charged now with cutting $1.5 trillion from the budget by Christmas, provided $139 million to operate the center last year, and has made every effort to keep it open — even as a former deputy commander of the detention center calls it “expensive” and “inefficient.”

“It’s a slow-motion Berlin Airlift — that’s been going on for 10 years,” says retired Army Brig. Gen. Greg Zanetti, a West Point graduate who in 2008 was deputy commander at the detention center.

Both its location and temporary nature drive up costs, says Zanetti. While there, he wrote a secret study that compared the operation to Alcatraz, noting that Attorney General Robert F. Kennedy had closed it in 1963 because it was too expensive.