Chart of the day: America's defense spending

Just the facts, ma'am (ht):

How does this relate to the debt and deficit that we often worry about?  Let us check in with Alan Simpson, the co-chair of President Obama's National Commission on Fiscal Responsiblity and Reform (ht):

“We’re going to get rid of all earmarks, all waste, fraud and abuse, all foreign aid, Air Force One, all congressional pensions,” said Simpson on Sunday in an interview on CNN’s “State of the Union.” “That’s just sparrow belch in the midst of the typhoon. That’s about six, eight, ten percent of where we are. So, I’m waiting for the politician to get up and say, there’s only one way to do this: you dig into the big four, Medicare, Medicaid, Social Security, and defense. And anybody giving you anything different than that, you want to walk out the door, stick your finger down your throat, and give them the green weenie.”...
While many Republicans are still resisting cutting the defense budget, Simpson said that military spending needed to be addressed in order to seriously reduce the deficit. He said that the commission asked Sens. Dick Durbin (D-Ill.) and Kent Conrad (D-N.D.) about what they hear from the Defense Department about cutting contractors. “They don’t know how many contractors they have,” he said in amazement of the Pentagon. “It’s something between 250,000 and a million. So, our proposal is to cut 250,000 contractors out of the game.”

The Pentagon doesn't even know how many defense contractors it has?  Do they at least know how many billions we spend?